WIP: Implement CRUD, improve menu configuration

src/Controller/Admin/Application/IndexController.php

@@ -0,0 +1,16 @@
+<?php
+
+namespace App\Controller\Admin\Application;
+
+use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
+use Symfony\Component\HttpFoundation\Response;
+use Symfony\Component\Routing\Annotation\Route;
+
+class IndexController extends AbstractController
+{
+    #[Route('/admin/application', name: 'app_admin_application_index')]
+    public function index(): Response
+    {
+        return $this->render('admin/application/index.html.twig');
+    }
+}