Quality Commands

Added experimental Identity API. (For Gabouu!)

Added /custom_attribute

Added /with var score... and /with var bossbar... (Suggested by spaghettube on Github!)

Experimental, expect issues with setting custom model!!!

Identity features currently implemented: -Model -Hitbox -Attributes? (Questionable implementation) -Hand (Most of the time) To be implemented: -Abilities(flight,fireballs) -AI Redirect (mobs treat you as your identity) eg (foxes attack players pretending to be chickens) -Less desync