First draft for plugins system

app/Core/PluginBase.php

@@ -0,0 +1,31 @@
+<?php
+
+namespace Core;
+
+/**
+ * Plugin Base class
+ *
+ * @package  core
+ * @author   Frederic Guillot
+ */
+abstract class PluginBase extends Base
+{
+    /**
+     * Method called for each request
+     *
+     * @abstract
+     * @access public
+     */
+    abstract public function initialize();
+
+    /**
+     * Returns all classes that needs to be stored in the DI container
+     *
+     * @access public
+     * @return array
+     */
+    public function getClasses()
+    {
+        return array();
+    }
+}