feat: add compass button to reset map rotation to north

- Add new CompassMapPluginWidget for map north alignment control
- Position compass button at top-right of maps
- Reset rotation to 0° while maintaining center and zoom level
- Improve UX by allowing users to easily return to north orientation
- Integrate compass into both genericMap and monitoredAreas pages

lib/monitoredAreas.dart

@@ -4,6 +4,7 @@ import 'package:flutter_redux/flutter_redux.dart';
 import 'package:latlong2/latlong.dart';
 
 import 'colors.dart';
+import 'compassMapPlugin.dart';
 import 'customBottomAppBar.dart';
 import 'generated/i18n.dart';
 import 'mainDrawer.dart';
@@ -84,6 +85,7 @@ class MonitoredAreasPage extends StatelessWidget {
                                   subdomains: ['a', 'b', 'c', 'd'],
                                   userAgentPackageName:
                                       'com.example.fires_flutter'),
+                              new CompassMapPluginWidget(),
                               new PolylineLayer(
                                 polylines: view.monitoredAreas,
                               )