Added SetModel vfunc offsets

[ThomasVieth]

Found this useful for setting the model of weapons when in the world. Hopefully should help others too :)

[satoon101]

Have you tried setting the model via the world_model_index attribute? If that works, I think it would be better to use it instead of having to rely on a virtual offset that can change whenever Valve updates the game.

from engines.precache import Model
from weapons.entity import Weapon

model = Model('some/model/path.mdl')
weapon = Weapon.create('weapon_flashbang')
weapon.world_model_index = model.index

[ThomasVieth]

Yeh I agree with you and I had noticed you made that commit a while ago. However after trying to change the world model upon OnEntitySpawned, it would only work using the vfunc. So thought it was best to provide it for others.

https://github.com/Predz/SP-Viewmodel-Changer/blob/master/addons/source-python/packages/custom/vmchanger/hooks.py#L16