Created Core module

module/Common/src/Entity/AbstractEntity.php

@@ -0,0 +1,33 @@
+<?php
+namespace Shlinkio\Shlink\Common\Entity;
+
+use Doctrine\ORM\Mapping as ORM;
+
+abstract class AbstractEntity
+{
+    /**
+     * @var int
+     * @ORM\Id
+     * @ORM\GeneratedValue(strategy="IDENTITY")
+     * @ORM\Column(name="id", type="bigint", options={"unsigned"=true})
+     */
+    protected $id;
+
+    /**
+     * @return int
+     */
+    public function getId()
+    {
+        return $this->id;
+    }
+
+    /**
+     * @param int $id
+     * @return $this
+     */
+    public function setId($id)
+    {
+        $this->id = $id;
+        return $this;
+    }
+}