init

- 框架初始化
 - 安装插件
 - 修复PHP8.4报错

addons/epay/library/v3/Yansongda/Pay/Contract/HttpClientInterface.php

@@ -0,0 +1,11 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Yansongda\Pay\Contract;
+
+use Psr\Http\Client\ClientInterface;
+
+interface HttpClientInterface extends ClientInterface
+{
+}