add route for comment + track update/creation of entities

src/Bundle/ChillMainBundle/Doctrine/Model/TrackCreationInterface.php

@@ -0,0 +1,12 @@
+<?php
+
+namespace Chill\MainBundle\Doctrine\Model;
+
+use Chill\MainBundle\Entity\User;
+
+interface TrackCreationInterface
+{
+    public function setCreatedBy(User $user): self;
+
+    public function setCreatedAt(\DateTimeInterface $datetime): self;
+}