Shiv melee and parry animations [CNS UPDATED]

Shiv is still using placeholder shared melee and parry animations. Wanted to make something that is more fitting to his stylish character. Backstab melee and comb over parry! Upon successful parry he strikes his leg up.

This works with existing retexture mods and probably model swap mods.

Added separate files for just the melee or parry if you don't want both