Changed directory structure and renamed applications

- autopilot -> drone_controller
- rtsp_ai_player -> ai_controller
- added top level qmake project file
- updated documentation
- moved small demo applications from tmp/ to misc/

ai_controller/aienginegimbalserverudpcommand.h

@@ -0,0 +1,27 @@
+/**
+ * This is a serial command class for Siyi Gimbal Cameras.
+ * Other cameras might need their own serial command class.
+ */
+
+#pragma once
+
+#include <QByteArray>
+#include <QList>
+#include <QObject>
+#include <QString>
+#include "aienginedefinitions.h"
+
+class AiEngineGimbalServerUDPCommand : public QObject
+{
+    Q_OBJECT
+public:
+    explicit AiEngineGimbalServerUDPCommand(QObject *parent = nullptr);
+
+public:
+    QByteArray getCommand(UDP_COMMAND_ID commandId);
+
+private:
+    QByteArray createByteArray(const std::initializer_list<int> &bytes);
+    int getCommandIndex(UDP_COMMAND_ID commandId);
+    std::vector<AiEngineServerSerialCommandStructure> mSerialCommands;
+};