Entity/Hologram Bodygroup E2 Functions

entity:setBodygroup(bgrp_id, bgrp_subid)
entity:getBodygroups(bgrp_id)

holoBodygroup(Index, bgrp_id, bgrp_subid)
holoBodygroups(Index, bgrp_id)

holoCull(N, N) - renders the inside of a hologram
Please take a look at the cl_init.lua changes, I am sure there is a
better way to do it than what I did.