Add test and benchmarks for the new ScaleInt64
Add test and benchmarks for the new ScaleInt64

New benchmark results:

BenchmarkExecutionSegmentScale/seq:;segment:/segment.Scale(5)-8         	470435558	      2.53 ns/op	       0 B/op	       0 allocs/op
BenchmarkExecutionSegmentScale/seq:;segment:/et.Scale(5)-8              	  967018	      1233 ns/op	     440 B/op	      17 allocs/op
BenchmarkExecutionSegmentScale/seq:;segment:/et.Scale(5)_prefilled-8    	150010268	      7.94 ns/op	       0 B/op	       0 allocs/op

BenchmarkExecutionSegmentScale/seq:;segment:/segment.Scale(5523)-8      	463766229	      2.93 ns/op	       0 B/op	       0 allocs/op
BenchmarkExecutionSegmentScale/seq:;segment:/et.Scale(5523)-8           	 1000000	      1277 ns/op	     440 B/op	      17 allocs/op
BenchmarkExecutionSegmentScale/seq:;segment:/et.Scale(5523)_prefilled-8 	83739726	      12.4 ns/op	       0 B/op	       0 allocs/op

BenchmarkExecutionSegmentScale/seq:;segment:/segment.Scale(5000000)-8   	464901876	      3.03 ns/op	       0 B/op	       0 allocs/op
BenchmarkExecutionSegmentScale/seq:;segment:/et.Scale(5000000)-8        	  784173	      1309 ns/op	     440 B/op	      17 allocs/op
BenchmarkExecutionSegmentScale/seq:;segment:/et.Scale(5000000)_prefilled-8      148228074	      13.3 ns/op	       0 B/op	       0 allocs/op

BenchmarkExecutionSegmentScale/seq:;segment:/segment.Scale(67280421310721)-8       	461219998	      2.74 ns/op	       0 B/op	       0 allocs/op
BenchmarkExecutionSegmentScale/seq:;segment:/et.Scale(67280421310721)-8            	  953570	      1224 ns/op	     440 B/op	      17 allocs/op
BenchmarkExecutionSegmentScale/seq:;segment:/et.Scale(67280421310721)_prefilled-8  	117047155	      12.6 ns/op	       0 B/op	       0 allocs/op

BenchmarkExecutionSegmentScale/seq:;segment:0:1/segment.Scale(5)-8                 	  850756	      1422 ns/op	     320 B/op	      19 allocs/op
BenchmarkExecutionSegmentScale/seq:;segment:0:1/et.Scale(5)-8                      	  806138	      1733 ns/op	     632 B/op	      21 allocs/op
BenchmarkExecutionSegmentScale/seq:;segment:0:1/et.Scale(5)_prefilled-8            	154531297	      11.8 ns/op	       0 B/op	       0 allocs/op

BenchmarkExecutionSegmentScale/seq:;segment:0:1/segment.Scale(5523)-8              	  926948	      1306 ns/op	     320 B/op	      19 allocs/op
BenchmarkExecutionSegmentScale/seq:;segment:0:1/et.Scale(5523)-8                   	  643215	      1694 ns/op	     632 B/op	      21 allocs/op
BenchmarkExecutionSegmentScale/seq:;segment:0:1/et.Scale(5523)_prefilled-8         	147420830	      7.77 ns/op	       0 B/op	       0 allocs/op

BenchmarkExecutionSegmentScale/seq:;segment:0:1/segment.Scale(5000000)-8           	 1000000	      1329 ns/op	     320 B/op	      19 allocs/op
BenchmarkExecutionSegmentScale/seq:;segment:0:1/et.Scale(5000000)-8                	  692818	      1745 ns/op	     632 B/op	      21 allocs/op
BenchmarkExecutionSegmentScale/seq:;segment:0:1/et.Scale(5000000)_prefilled-8      	146246756	      7.82 ns/op	       0 B/op	       0 allocs/op

BenchmarkExecutionSegmentScale/seq:;segment:0:1/segment.Scale(67280421310721)-8    	  829132	      1339 ns/op	     320 B/op	      19 allocs/op
BenchmarkExecutionSegmentScale/seq:;segment:0:1/et.Scale(67280421310721)-8         	  748573	      1760 ns/op	     632 B/op	      21 allocs/op
BenchmarkExecutionSegmentScale/seq:;segment:0:1/et.Scale(67280421310721)_prefilled-8      120025989	      14.9 ns/op	       0 B/op	       0 allocs/op

BenchmarkExecutionSegmentScale/seq:;segment:2/5:4/5/segment.Scale(5)-8                                584570	      1979 ns/op	     512 B/op	      28 allocs/op
BenchmarkExecutionSegmentScale/seq:;segment:2/5:4/5/et.Scale(5)-8                                     333420	      3545 ns/op	    1432 B/op	      42 allocs/op
BenchmarkExecutionSegmentScale/seq:;segment:2/5:4/5/et.Scale(5)_prefilled-8                         151765993	         7.75 ns/op	       0 B/op	       0 allocs/op

BenchmarkExecutionSegmentScale/seq:;segment:2/5:4/5/segment.Scale(5523)-8                             519910	      2113 ns/op	     624 B/op	      32 allocs/op
BenchmarkExecutionSegmentScale/seq:;segment:2/5:4/5/et.Scale(5523)-8                                  311260	      3682 ns/op	    1432 B/op	      42 allocs/op
BenchmarkExecutionSegmentScale/seq:;segment:2/5:4/5/et.Scale(5523)_prefilled-8                      140018670	         9.14 ns/op	       0 B/op	       0 allocs/op

BenchmarkExecutionSegmentScale/seq:;segment:2/5:4/5/segment.Scale(5000000)-8                          597290	      1980 ns/op	     512 B/op	      28 allocs/op
BenchmarkExecutionSegmentScale/seq:;segment:2/5:4/5/et.Scale(5000000)-8                               289699	      3680 ns/op	    1432 B/op	      42 allocs/op
BenchmarkExecutionSegmentScale/seq:;segment:2/5:4/5/et.Scale(5000000)_prefilled-8                   149898025	         7.77 ns/op	       0 B/op	       0 allocs/op

BenchmarkExecutionSegmentScale/seq:;segment:2/5:4/5/segment.Scale(67280421310721)-8                   539796	      2185 ns/op	     672 B/op	      33 allocs/op
BenchmarkExecutionSegmentScale/seq:;segment:2/5:4/5/et.Scale(67280421310721)-8                        347833	      3612 ns/op	    1432 B/op	      42 allocs/op
BenchmarkExecutionSegmentScale/seq:;segment:2/5:4/5/et.Scale(67280421310721)_prefilled-8            122449836	        11.3 ns/op	       0 B/op	       0 allocs/op

BenchmarkExecutionSegmentScale/seq:;segment:2235/5213:4/5/segment.Scale(5)-8                          610802	      2086 ns/op	     568 B/op	      30 allocs/op
BenchmarkExecutionSegmentScale/seq:;segment:2235/5213:4/5/et.Scale(5)-8                                 1831	    730963 ns/op	  492833 B/op	      42 allocs/op
BenchmarkExecutionSegmentScale/seq:;segment:2235/5213:4/5/et.Scale(5)_prefilled-8                   132629142	        12.4 ns/op	       0 B/op	       0 allocs/op

BenchmarkExecutionSegmentScale/seq:;segment:2235/5213:4/5/segment.Scale(5523)-8                       516368	      2294 ns/op	     672 B/op	      33 allocs/op
BenchmarkExecutionSegmentScale/seq:;segment:2235/5213:4/5/et.Scale(5523)-8                              1519	    733097 ns/op	  492833 B/op	      42 allocs/op
BenchmarkExecutionSegmentScale/seq:;segment:2235/5213:4/5/et.Scale(5523)_prefilled-8                  777319	      1370 ns/op	       0 B/op	       0 allocs/op

BenchmarkExecutionSegmentScale/seq:;segment:2235/5213:4/5/segment.Scale(5000000)-8                    554041	      2184 ns/op	     568 B/op	      30 allocs/op
BenchmarkExecutionSegmentScale/seq:;segment:2235/5213:4/5/et.Scale(5000000)-8                           1500	    756885 ns/op	  492832 B/op	      42 allocs/op
BenchmarkExecutionSegmentScale/seq:;segment:2235/5213:4/5/et.Scale(5000000)_prefilled-8               244622	      4696 ns/op	       0 B/op	       0 allocs/op

BenchmarkExecutionSegmentScale/seq:;segment:2235/5213:4/5/segment.Scale(67280421310721)-8             500317	      2334 ns/op	     720 B/op	      34 allocs/op
BenchmarkExecutionSegmentScale/seq:;segment:2235/5213:4/5/et.Scale(67280421310721)-8                    1624	    742685 ns/op	  492833 B/op	      42 allocs/op
BenchmarkExecutionSegmentScale/seq:;segment:2235/5213:4/5/et.Scale(67280421310721)_prefilled-8        422404	      3310 ns/op	       0 B/op	       0 allocs/op

BenchmarkExecutionSegmentScale/seq:0,0.3,0.5,0.6,0.7,0.8,0.9,1;segment:0:0.3/segment.Scale(5)-8         	  690877	      1675 ns/op	     424 B/op	      22 allocs/op
BenchmarkExecutionSegmentScale/seq:0,0.3,0.5,0.6,0.7,0.8,0.9,1;segment:0:0.3/et.Scale(5)-8              	  435661	      2644 ns/op	    1064 B/op	      29 allocs/op
BenchmarkExecutionSegmentScale/seq:0,0.3,0.5,0.6,0.7,0.8,0.9,1;segment:0:0.3/et.Scale(5)_prefilled-8    	139451774	      8.49 ns/op	       0 B/op	       0 allocs/op

BenchmarkExecutionSegmentScale/seq:0,0.3,0.5,0.6,0.7,0.8,0.9,1;segment:0:0.3/segment.Scale(5523)-8      	  732109	      1593 ns/op	     424 B/op	      22 allocs/op
BenchmarkExecutionSegmentScale/seq:0,0.3,0.5,0.6,0.7,0.8,0.9,1;segment:0:0.3/et.Scale(5523)-8           	  448272	      2659 ns/op	    1064 B/op	      29 allocs/op
BenchmarkExecutionSegmentScale/seq:0,0.3,0.5,0.6,0.7,0.8,0.9,1;segment:0:0.3/et.Scale(5523)_prefilled-8 	147587318	      8.26 ns/op	       0 B/op	       0 allocs/op

BenchmarkExecutionSegmentScale/seq:0,0.3,0.5,0.6,0.7,0.8,0.9,1;segment:0:0.3/segment.Scale(5000000)-8   	  840579	      1384 ns/op	     320 B/op	      19 allocs/op
BenchmarkExecutionSegmentScale/seq:0,0.3,0.5,0.6,0.7,0.8,0.9,1;segment:0:0.3/et.Scale(5000000)-8        	  469440	      2701 ns/op	    1064 B/op	      29 allocs/op
BenchmarkExecutionSegmentScale/seq:0,0.3,0.5,0.6,0.7,0.8,0.9,1;segment:0:0.3/et.Scale(5000000)_prefilled-8     129229272	      9.03 ns/op	       0 B/op	       0 allocs/op

BenchmarkExecutionSegmentScale/seq:0,0.3,0.5,0.6,0.7,0.8,0.9,1;segment:0:0.3/segment.Scale(67280421310721)-8       	  844422	1494 ns/op	     376 B/op	      21 allocs/op
BenchmarkExecutionSegmentScale/seq:0,0.3,0.5,0.6,0.7,0.8,0.9,1;segment:0:0.3/et.Scale(67280421310721)-8            	  435537	2651 ns/op	    1064 B/op	      29 allocs/op
BenchmarkExecutionSegmentScale/seq:0,0.3,0.5,0.6,0.7,0.8,0.9,1;segment:0:0.3/et.Scale(67280421310721)_prefilled-8  	88344691	12.1 ns/op	       0 B/op	       0 allocs/op

BenchmarkExecutionSegmentScale/seq:0,0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.8,0.9,1;segment:0:0.1/segment.Scale(5)-8        	  733918	1606 ns/op	     376 B/op	      21 allocs/op
BenchmarkExecutionSegmentScale/seq:0,0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.8,0.9,1;segment:0:0.1/et.Scale(5)-8             	  369414	3192 ns/op	    1208 B/op	      36 allocs/op
BenchmarkExecutionSegmentScale/seq:0,0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.8,0.9,1;segment:0:0.1/et.Scale(5)_prefilled-8   	141027226	9.66 ns/op	       0 B/op	       0 allocs/op

BenchmarkExecutionSegmentScale/seq:0,0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.8,0.9,1;segment:0:0.1/segment.Scale(5523)-8     	  789291	1544 ns/op	     376 B/op	      21 allocs/op
BenchmarkExecutionSegmentScale/seq:0,0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.8,0.9,1;segment:0:0.1/et.Scale(5523)-8          	  354043	3199 ns/op	    1208 B/op	      36 allocs/op
BenchmarkExecutionSegmentScale/seq:0,0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.8,0.9,1;segment:0:0.1/et.Scale(5523)_prefilled-8       139259516	8.24 ns/op	       0 B/op	       0 allocs/op

BenchmarkExecutionSegmentScale/seq:0,0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.8,0.9,1;segment:0:0.1/segment.Scale(5000000)-8         1000000	1396 ns/op	     320 B/op	      19 allocs/op
BenchmarkExecutionSegmentScale/seq:0,0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.8,0.9,1;segment:0:0.1/et.Scale(5000000)-8              391041	3242 ns/op	    1208 B/op	      36 allocs/op
BenchmarkExecutionSegmentScale/seq:0,0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.8,0.9,1;segment:0:0.1/et.Scale(5000000)_prefilled-8    148571696	7.92 ns/op	       0 B/op	       0 allocs/op

BenchmarkExecutionSegmentScale/seq:0,0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.8,0.9,1;segment:0:0.1/segment.Scale(67280421310721)-8      970454	1550 ns/op	     376 B/op	      21 allocs/op
BenchmarkExecutionSegmentScale/seq:0,0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.8,0.9,1;segment:0:0.1/et.Scale(67280421310721)-8           425010	3107 ns/op	    1208 B/op	      36 allocs/op
BenchmarkExecutionSegmentScale/seq:0,0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.8,0.9,1;segment:0:0.1/et.Scale(67280421310721)_prefilled-8 72204832	14.5 ns/op	       0 B/op	       0 allocs/op

loadimpact/k6,loadimpact/k6