chunker: Add benchmark for reducibility test
chunker: Add benchmark for reducibility test

bchapuis/restic,byo/restic,jayme-github/restic,klauspost/restic,ckemper67/restic,pombredanne/restic,ar-jan/restic,restic/restic,kurin/restic,fawick/restic,howeyc/restic,stuertz/restic,mappu/restic,jayme-github/restic,episource/restic,middelink/restic,restic/restic,middelink/restic,stuertz/restic,intfrr/restic,byo/restic,ar-jan/restic,arithmetric/restic,kurin/restic,fawick/restic