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/

drone_controller/az_coordinate.h

@@ -0,0 +1,19 @@
+#pragma once
+
+#include <ostream>
+
+using namespace std;
+
+const double INVALID_LATITUDE  = -100000;
+const double INVALID_LONGITUDE = -100000;
+
+class AzCoordinate
+{
+public:
+    double latitude;
+    double longitude;
+
+    AzCoordinate(double lat, double lon);
+
+    friend ostream &operator<<(ostream &os, const AzCoordinate &obj);
+};