Convert registerDefaultServices to async and update service initialization

finlog_app/app/lib/main.dart

@@ -8,7 +8,7 @@ Future<void> main() async {
   WidgetsFlutterBinding.ensureInitialized();
 
   // any services
-  App.registerDefaultServices();
+  await App.registerDefaultServices();
 
   final logger = App.service<Logger>();
   logger.debug("[MAIN] Registered all default services");