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/aienginegimbalserver.h

@@ -2,6 +2,7 @@
 
 #include <QObject>
 #include <QMap>
+#include <QUdpSocket>
 #include "aienginedefinitions.h"
 #include "aienginegimbalserveractions.h"
 #include "aienginegimbalserverudpcommand.h"
@@ -34,4 +35,8 @@ private:
     AiEngineGimbalServerUDPResponse mUdpResponse;
     AiEngineGimbalServerActions mActions;
     bool mIsAvailable;
+    QUdpSocket mReceiveUdpSocket; // UDP socket for receiving commands
+
+private slots:
+    void processPendingDatagrams(void); // Handles incoming UDP messages
 };