ekf2 support SET_GPS_GLOBAL_ORIGIN and remove globallocalconverter usage

- vehicle_command cmd extended from uint16 to support PX4 internal commands that don't map to mavlink

src/modules/rover_pos_control/RoverPositionControl.hpp

@@ -129,6 +129,9 @@ private:
 	hrt_abstime _control_position_last_called{0}; 	/**<last call of control_position  */
 	hrt_abstime _manual_setpoint_last_called{0};
 
+	map_projection_reference_s _global_local_proj_ref{};
+	float                      _global_local_alt0{NAN};
+
 	/* Pid controller for the speed. Here we assume we can control airspeed but the control variable is actually on
 	 the throttle. For now just assuming a proportional scaler between controlled airspeed and throttle output.*/
 	PID_t _speed_ctrl{};