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/aiengineimagesaver.h

@@ -0,0 +1,21 @@
+#pragma once
+
+#include <QThread>
+#include <QString>
+#include <opencv2/opencv.hpp>
+
+class AiEngineImageSaver : public QThread
+{
+    Q_OBJECT
+
+public:
+    AiEngineImageSaver(const cv::Mat &image, int imageNumber, QObject *parent = nullptr);
+    ~AiEngineImageSaver();
+
+protected:
+    void run() override;
+
+private:
+    cv::Mat image;
+    int imageNumber;
+};