GetVehicleRotationQuat doesn't store data for unoccupied/trailer vehicle #626
Description
OMP server doesn't store quaternion data at all from any sync but only driver (incar), while SA-MP server does.
SA-MP server, in turn, has bugs with corrupted 3rd field in GetVehicleRotationQuat in unoccupied sync and the fact that it gets quaternions of the truck instead of a trailer for GetVehicleRotationQuat, but still. These all can be fixed, and the omp server can start passing relevant quats from the current sync vehicle is updating by.