Update CallbackPostFX.hpp

Fixed references to Scene.
Update CRadar.h

CRadar (full) added.
Update CRadar.cpp

CRadar (full) added.
Fixed vehicle pool
Fixed vehicle pool
Fixed Thiscall callback
Fixed Ped plugin manager
Fixed Vehicle plugin manager
Added GetArrayIndex() method
'Scene' was already defined in CScene.h.
Documented some fields
More fields