add Basic Shopware API

add Tests

tests/OrdersTest.php

@@ -0,0 +1,16 @@
+<?php
+
+namespace App\Tests;
+
+use ApiPlatform\Core\Bridge\Symfony\Bundle\Test\ApiTestCase;
+
+class OrdersTest extends ApiTestCase
+{
+    public function testSomething(): void
+    {
+        $response = static::createClient()->request('GET', '/');
+
+        $this->assertResponseIsSuccessful();
+        $this->assertJsonContains(['@id' => '/']);
+    }
+}