feat: Refactor code structure and optimize performance across multiple modules

mobile-apps/client-app/lib/app.dart

@@ -0,0 +1,18 @@
+import 'package:flutter/material.dart';
+import 'package:krow/core/application/routing/routes.dart';
+import 'package:krow/core/presentation/styles/theme.dart';
+
+final appRouter = AppRouter();
+
+class KrowApp extends StatelessWidget {
+  const KrowApp({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return MaterialApp.router(
+      routerConfig: appRouter.config(
+          deepLinkBuilder: (l) => appRouter.deepLinkBuilder(l)),
+      theme: KWTheme.lightTheme,
+    );
+  }
+}