Commander: reintroduce last stick position

src/modules/commander/Commander.cpp

@@ -2705,6 +2705,7 @@ Commander::run()
 		_last_condition_global_position_valid = _status_flags.condition_global_position_valid;
 
 		_was_armed = _armed.armed;
+		_last_manual_control_setpoint = _manual_control_setpoint;
 
 		arm_auth_update(now, params_updated || param_init_forced);
 

src/modules/commander/Commander.hpp

@@ -363,7 +363,8 @@ private:
 
 	unsigned int	_leds_counter{0};
 
-	manual_control_setpoint_s _manual_control_setpoint{};		///< the current manual control setpoint
+	manual_control_setpoint_s _manual_control_setpoint{};
+	manual_control_setpoint_s _last_manual_control_setpoint{};
 	manual_control_switches_s _manual_control_switches{};
 	manual_control_switches_s _last_manual_control_switches{};
 	hrt_abstime	_rc_signal_lost_timestamp{0};		///< Time at which the RC reception was lost