Introduced empty PartRepository for later use.

src/Repository/PartRepository.php

@@ -0,0 +1,17 @@
+<?php
+/**
+ * Created by PhpStorm.
+ * User: janhb
+ * Date: 23.02.2019
+ * Time: 22:46
+ */
+
+namespace App\Repository;
+
+
+use Doctrine\ORM\EntityRepository;
+
+class PartRepository extends EntityRepository
+{
+    //TODO
+}