make controller

src/Controller/DiffDaysController.php

+<?php
+
+namespace App\Controller;
+
+use App\Actions\DiffDaysAction;
+use App\Requests\DiffDaysRequest;
+use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
+use Symfony\Component\HttpFoundation\JsonResponse;
+use Symfony\Component\HttpFoundation\Response;
+use Symfony\Component\Routing\Attribute\Route;
+
+class DiffDaysController extends AbstractController
+{
+    /**
+     * Контроллер вернет кол-во дней между датами
+     * @param DiffDaysRequest $request
+     * @param DiffDaysAction $action
+     * @return Response
+     */
+    #[Route('/diff/days', name: 'app_diff_days', methods: ['POST'])]
+    public function index(DiffDaysRequest $request, DiffDaysAction $action): Response
+    {
+        $array = $request->serialise();
+        return new JsonResponse($action->act($array['startDate'], $array['endDate']));
+    }
+}