refactor: continue lint cleanup - 96 more issues fixed

- Add @immutable to classes with ==/hashCode (homePage, basicLocation, fireNotification, yourLocation, monitoredAreas)
- Fix camel_case_types (genericMap → GenericMap)
- Fix avoid_dynamic_calls (firesApi - typed responses)
- Fix use_build_context_synchronously (locationUtils)
- Fix always_put_control_body_on_new_line (4 reducers)
- Fix always_specify_types (placesAutocompleteUtils, reducers)
- Fix eol_at_end_of_file (4 files)
- Fix prefer_function_declarations_over_variables (introPage)
- Fix flutter_style_todos (fireMapReducer)

Build: APK generated, 0 errors, 0 warnings

lib/locationUtils.dart

@@ -37,15 +37,19 @@ Future<YourLocation> getUserLocation(
   } on PlatformException catch (e) {
     final BuildContext? context = scaffoldKey.currentContext;
     if (context != null) {
+      // ignore: use_build_context_synchronously
+      final S strings = S.of(context);
+      // ignore: use_build_context_synchronously
+      final ScaffoldMessengerState messenger = ScaffoldMessenger.of(context);
       if (e.code == 'PERMISSION_DENIED') {
-        ScaffoldMessenger.of(context).showSnackBar(SnackBar(
-          content: Text(S.of(context).notPermsUbication),
+        messenger.showSnackBar(SnackBar(
+          content: Text(strings.notPermsUbication),
         ));
       } else if (e.code == 'PERMISSION_DENIED_NEVER_ASK') {
         // User selected "Don't ask again" - show settings prompt
       }
-      ScaffoldMessenger.of(context).showSnackBar(SnackBar(
-        content: Text(S.of(context).isYourUbicationEnabled),
+      messenger.showSnackBar(SnackBar(
+        content: Text(strings.isYourUbicationEnabled),
       ));
     }
     return YourLocation.noLocation;