drone status pill in footer for fly mode implemented. footer layout and sizes homogenized

app/lib/transport/msp/msp_telemetry_poller.dart

@@ -40,6 +40,8 @@ class MspTelemetryPoller {
   int? _activeWaypointIndex;
   int _batteryPercent = 0;
   int _linkQuality = 0;
+  int _snrDb = 0;
+  int _navMode = 0;
   String _flightMode = 'Idle';
 
   Stream<TelemetryFrame> get frames => _framesController.stream;
@@ -81,13 +83,15 @@ class MspTelemetryPoller {
       );
       final navStatusPayload = await _client.request(MspCommands.navStatus);
       _activeWaypointIndex = parseMspNavStatusActiveWaypoint(navStatusPayload);
-      _flightMode = parseMspNavMode(navStatusPayload).formatted;
+      final navMode = parseMspNavMode(navStatusPayload);
+      _navMode = navMode.mode;
+      _flightMode = navMode.formatted;
       _batteryPercent = parseMspInavAnalogBatteryPercent(
         await _client.request(MspCommands.inavAnalog),
       );
-      _linkQuality = parseMspLinkQuality(
-        await _client.request(MspCommands.inavLinkStats),
-      );
+      final linkStatsPayload = await _client.request(MspCommands.inavLinkStats);
+      _linkQuality = parseMspLinkQuality(linkStatsPayload);
+      _snrDb = parseMspLinkStatsSnr(linkStatsPayload);
     }
 
     if (!_framesController.isClosed) {
@@ -102,6 +106,9 @@ class MspTelemetryPoller {
         armed: _armed,
         batteryPercent: _batteryPercent,
         linkQuality: _linkQuality,
+        snrDb: _snrDb,
+        hdop: gps.hdop,
+        navMode: _navMode,
         flightMode: _flightMode,
         activeWaypointIndex: _activeWaypointIndex,
       ));