AirMapManager: update AirMapFlightManager to latest AirMap API

This includes polling for a flight permission.
The steps are:
- get pilot id (new API requires to provide it, even though it does not
  make much sense)
- create a flight plan
- call the briefing (to check if SITA registration id's are valid)
- call the submit -> returns the actual flight id
- poll on the briefing until the flight gets approved

Since there can only be one flight, on startup, we list the pilot's flights
and end the one that ends in future

src/MissionManager/AirMapManager.h

@@ -255,17 +255,51 @@ signals:
 private slots:
     void _parseJson(QJsonParseError parseError, QJsonDocument doc);
     void _error(QNetworkReply::NetworkError code, const QString& errorString, const QString& serverErrorMessage);
+
+    void _sendBriefingRequest();
 private:
+
+    /**
+     * upload flight stored in _flight
+     */
+    void _uploadFlight();
+
+    /**
+     * implementation of endFlight()
+     */
+    void _endFlight(const QString& flightID);
+
     enum class State {
         Idle,
+        GetPilotID,
         FlightUpload,
+        FlightBrief,
+        FlightSubmit,
+        FlightPolling, // poll & check for approval
         FlightEnd,
+        EndFirstFlight, // get a list of open flights & end the first one (because there can only be 1 active at a time)
+    };
+    struct Flight {
+        QList<QGeoCoordinate> coords;
+        QGeoCoordinate takeoffCoord;
+        float maxAltitude = 0;
+
+        void reset() {
+            coords.clear();
+            maxAltitude = 0;
+        }
     };
+    Flight                              _flight; ///< flight pending to be uploaded
 
     State                               _state = State::Idle;
     AirMapNetworking                    _networking;
     QString                             _currentFlightId; ///< Flight ID, empty if there is none
+    QString                             _pendingFlightId; ///< current flight ID, not necessarily accepted yet (once accepted, it's equal to _currentFlightId)
+    QString                             _pendingFlightPlan; ///< current flight plan, waiting to be submitted
     AirspaceAuthorization::PermitStatus _flightPermitStatus = AirspaceAuthorization::PermitUnknown;
+    QString                             _pilotID; ///< Pilot ID in the form "auth0|abc123"
+    bool                                _noFlightCreatedYet = true;
+    QTimer                              _pollTimer; ///< timer to poll for approval check
 };
 
 /// class to send telemetry data to AirMap
@@ -316,7 +350,7 @@ private:
     uint32_t                _seqNum = 1;
     QUdpSocket*             _socket = nullptr;
     QHostAddress            _udpHost;
-    static constexpr int    _udpPort = 16060;
+    static constexpr int    _udpPort = 32003;
 
     float                   _lastHdop = 1.f;
 };