[euler] Add test for solution to problem 105
[euler] Add test for solution to problem 105

stmuk/perl6-examples,Quinny/perl6-examples,shlomif/perl6-examples,perl6/perl6-examples,perl6/perl6-examples,shlomif/perl6-examples,perl6/perl6-examples,Quinny/perl6-examples,perl6/perl6-examples,Quinny/perl6-examples,stmuk/perl6-examples,shlomif/perl6-examples,stmuk/perl6-examples,Quinny/perl6-examples,shlomif/perl6-examples,stmuk/perl6-examples,perl6/perl6-examples,Quinny/perl6-examples,shlomif/perl6-examples,stmuk/perl6-examples