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/redux/userReducer.dart

@@ -2,9 +2,14 @@ import '../models/user.dart';
 import 'actions.dart';
 
 User userReducer(User user, dynamic action) {
-  if (action is OnUserCreatedAction)
+  if (action is OnUserCreatedAction) {
     return user.copyWith(userId: action.userId);
-  if (action is OnUserTokenAction) return user.copyWith(token: action.token);
-  if (action is OnUserLangAction) return user.copyWith(lang: action.lang);
+  }
+  if (action is OnUserTokenAction) {
+    return user.copyWith(token: action.token);
+  }
+  if (action is OnUserLangAction) {
+    return user.copyWith(lang: action.lang);
+  }
   return user;
 }