Added Controller draft

src/controller/order/OrderInterface.php

@@ -0,0 +1,20 @@
+<?php
+namespace controller\order;
+
+/**
+ * @author kevinfrantz
+ *        
+ */
+interface OrderInterface
+{
+    /**
+     * Saves the order
+     */
+    public function store():void;
+    
+    public function addProduct():void;
+    
+    public function showBasket():void;
+    
+    public function selectPaymentMethod():void;
+}