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/

misc/udp/udp_server/main.cpp

@@ -0,0 +1,9 @@
+#include <QCoreApplication>
+#include "udpserver.h"
+
+int main(int argc, char *argv[])
+{
+    QCoreApplication a(argc, argv);
+    UdpServer server(5678);
+    return a.exec();
+}