Set camera ready for lift and drop

Added functionality to set camera ready for bringing it down or up.
Camera will be made available for AI after bringCameraDown command is given via UDPSocket.
Camera will be made unavailable for AI after bringCameraUp command is given via UDPSocket.

ai_controller/aienginegimbalserveractions.h

@@ -49,6 +49,8 @@ public slots:
     void zoomToTarget(AiEngineRectangleProperties rectangle);
     void getLocation(AiEngineDronePosition dronePosition, int targetIndex);
     void restoreOrientationAndZoom(AiEngineGimbalStatus gimbalStatus);
+    void goToInitialOrientation(void);
+    void setAllowCameraCommands(bool allow);
 
 signals:
     void aiTargetZoomed(AiEngineTargetPosition);
@@ -58,6 +60,7 @@ private:
     AiEngineGimbalServerUDPCommand *mUdpCommand;
     AiEngineGimbalServerUDPResponse *mUdpResponse;
     AiEngineGimbalStatus *mGimbalStatus;
+    bool mAllowCameraCommands;
 
 private slots:
     CameraData getCameraData(void);