create and use core module

src/Appwrite/Platform/Appwrite.php

@@ -10,6 +10,7 @@ class Appwrite extends Platform
 {
     public function __construct()
     {
+        parent::__construct(new Core());
         $this->addService('tasks', new Tasks());
         $this->addService('workers', new Workers());
     }

src/Appwrite/Platform/Core.php

@@ -0,0 +1,9 @@
+<?php
+
+namespace Appwrite\Platform;
+
+use Utopia\Platform\Module;
+
+class Core extends Module
+{
+}