Changed Marshalling hierarchy

- Loadout: Removed CurrentLoadedMagazines && CurrentWeapon
- Player:  Added CurrentWeapon
- PrimaryWeapon, HandgunWeapon, SecondaryWeapon: Added ParamAttribute; TODO: Add ConverterInOutFunc for Bullets
- LoadedMagazines : Renamed to LoadedMagazine
- CurrentLoadedMagazines: Removed Class entirely; fully represented by LoadedMagazine