Add output of build.go to gitignore
Add output of build.go to gitignore

mappu/restic,fawick/restic,byo/restic,ckemper67/restic,middelink/restic,restic/restic,stuertz/restic,jayme-github/restic,restic/restic,ar-jan/restic,jayme-github/restic,ar-jan/restic,bchapuis/restic,stuertz/restic,byo/restic,middelink/restic,kurin/restic,arithmetric/restic,kurin/restic,fawick/restic