msp over wifi implemented

app/lib/transport/mock/mock_flight_controller_link.dart

@@ -10,6 +10,7 @@ class MockFlightControllerLink implements FlightControllerLink {
   int? _activeWaypointIndex;
   StreamController<TelemetryFrame>? _telemetryController;
   Timer? _ticker;
+  double _heading = 0;
 
   @override
   FcCapabilities get capabilities => const FcCapabilities(
@@ -22,11 +23,17 @@ class MockFlightControllerLink implements FlightControllerLink {
   Future<void> connect() async {
     _telemetryController = StreamController<TelemetryFrame>.broadcast();
     _ticker = Timer.periodic(const Duration(seconds: 1), (_) {
+      // Kurs dreht sich langsam weiter statt fest zu stehen, damit die
+      // Rotation des Drohnen-Markers (DroneMarkerIcon) auch ohne Hardware
+      // sichtbar ueberprueft werden kann (Doku 9: UI-Entwicklung ohne
+      // Hardware).
+      _heading = (_heading + 5) % 360;
       _telemetryController?.add(TelemetryFrame(
         lat: 52.5,
         lon: 13.4,
         altitudeM: 120,
         speedMs: 18,
+        headingDeg: _heading,
         armed: _armed,
         activeWaypointIndex: _activeWaypointIndex,
       ));