Added instances for ReifiedGetter, added ReifiedIndexedFold
Added instances for ReifiedGetter, added ReifiedIndexedFold

cchalmers/lens,danidiaz/lens,timjb/lens,Gabriel439/lens,hvr/lens,omefire/lens,cdepillabout/lens,Icelandjack/lens,ddssff/lens,hvr/lens,Fuuzetsu/lens,rpglover64/lens