Add Code Quality Badge
Add Code Quality Badge

Closes #379

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