refactor: continue lint cleanup - 21 more issues fixed

- Fix always_specify_types (fireAlert, genericMap, mainCommon, firesApi)
- Fix always_put_control_body_on_new_line (firesApi, placesAutocompleteUtils)
- Fix unnecessary_import (remove redundant meta imports)

Build: APK generated, 0 errors, 0 warnings

lib/mainCommon.dart

@@ -45,7 +45,8 @@ Future<void> mainCommon(List<Middleware<AppState>> otherMiddleware) async {
               firesApiKey: secrets['firesApiKey'] as String,
               serverUrl: secrets['firesApiUrl'] as String,
               firesApiUrl: "${secrets['firesApiUrl'] as String}api/v1/"),
-          middleware: List.from(otherMiddleware)..add(fetchDataMiddleware));
+          middleware: List<Middleware<AppState>>.from(otherMiddleware)
+            ..add(fetchDataMiddleware));
 
       getIt.registerSingleton<Store<AppState>>(store);
       getIt.registerSingleton<String>(store.state.firesApiUrl,