Introduced GUIDs for entities

source/game/BaseAmmo.cpp

source/game/BaseAmmo.h

source/game/BaseAmmoBox.cpp

source/game/BaseAmmoBox.h

source/game/BaseAnimating.cpp

source/game/BaseAnimating.h

source/game/BaseCharacter.cpp

source/game/BaseCharacter.h

source/game/BaseEntity.cpp

source/game/BaseEntity.h

source/game/BaseHandle.cpp

source/game/BaseItem.cpp

source/game/BaseItem.h

source/game/BaseLight.cpp

source/game/BaseLight.h

source/game/BaseMag.cpp

source/game/BaseMag.h

source/game/BaseScope.cpp

source/game/BaseSilencer.cpp

source/game/BaseTool.cpp