* initial api stuff

src/App/Service/YearManagerFactory.php

@@ -0,0 +1,17 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Service;
+
+use Doctrine\ORM\EntityManager;
+use Psr\Container\ContainerInterface;
+
+class YearManagerFactory
+{
+    public function __invoke(ContainerInterface $container): YearManager
+    {
+        $entityManager = $container->get(EntityManager::class);
+        return new YearManager($entityManager);
+    }
+}