feat : Decorator basic

app/Interface/Test/Adapter/PaymentGatewayInterface.php

@@ -2,7 +2,7 @@
 
 namespace App\Interface\Test\Adapter;
 
-interface PaymentGateway
+interface PaymentGatewayInterface
 {
     public function pay(float $amount): array;
 }

app/Interface/Test/Decorator/ComponentInterface.php

@@ -0,0 +1,12 @@
+<?php
+
+namespace App\Interface\Test\Decorator;
+
+interface ComponentInterface
+{
+    /**
+     * 组件接口
+     * @return string
+     */
+    public function operation(): string;
+}