Change third person model for first person

[Duion]

https://github.com/Areloch/Torque3D/blob/EC_Experimental2/Templates/EntityComponent/game/scripts/behaviors/render/clientVisibility.cs

https://github.com/GarageGames/Torque3D/blob/development/Engine/source/T3D/shapeBase.cpp#L4807

I need to hide a mesh (the head) from the player model for first person, since I want to use true first person mode, but I need to hide the head because of clipping, JeffR provided some code examples in the links for that