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.cpp

@@ -0,0 +1,12 @@
+#include "az_coordinate.h"
+
+AzCoordinate::AzCoordinate(double lat, double lon)
+    : latitude(lat)
+    , longitude(lon)
+{}
+
+ostream &operator<<(ostream &os, const AzCoordinate &obj)
+{
+    os << "(" << obj.latitude << ", " << obj.longitude << ")";
+    return os;
+}