Command addition to kill specific stacks

[Ghazalan]

As mentioned to Nicole on discord.

The addition of a more specific /kill command to eliminate specific stacks would be lovely.

Something along the lines of /rs kill <stacktype mob/item/block/thing> <type mobname/itemname/blockname> So in example. /rs kill mob zombie 5 would only kill the stacks containing zombies in a 5 block radius from the player while leaving all other stacked mobs and itemstacks etc untouched.

If at all, /rs kill or /rs kill would be very useful additions on its own.