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/aiengine.h

@@ -0,0 +1,36 @@
+#pragma once
+
+#include <QObject>
+#include <QElapsedTimer>
+#include <opencv2/core.hpp>
+#include <opencv2/videoio.hpp>
+#include "aienginertsplistener.h"
+#include "aiengineinference.h"
+#include "aienginegimbalclient.h"
+
+class AiEngine : public QObject
+{
+    Q_OBJECT
+public:
+    explicit AiEngine(QString modelPath, QObject *parent = nullptr);
+    void start(void);
+    void stop(void);
+
+public slots:
+    void frameReceivedSlot(cv::Mat frame);
+    void inferenceResultsReceivedSlot(AiEngineInferenceResult result);
+
+signals:
+    void inferenceFrame(cv::Mat frame);
+    void inferenceFrame2(cv::Mat frame);
+    void inferenceFrame3(cv::Mat frame);
+
+private:
+    QElapsedTimer mElapsedTimer;
+    uint32_t mFrameCounter = 0;
+    AiEngineRtspListener *mRtspListener;
+    AiEngineInference *mInference;
+    AiEngineInference *mInference2;
+    AiEngineInference *mInference3;
+    AiEngineGimbalClient *mGimbalClient;
+};