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_utils.h

@@ -0,0 +1,9 @@
+#pragma once
+
+class AzUtils
+{
+public:
+    AzUtils();
+
+    static double distance(double lat1, double lon1, double lat2, double lon2);
+};