init

- 框架初始化
 - 安装插件
 - 修复PHP8.4报错

addons/epay/library/v3/Yansongda/Pay/Exception/InvalidConfigException.php

@@ -0,0 +1,18 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Yansongda\Pay\Exception;
+
+use Throwable;
+
+class InvalidConfigException extends Exception
+{
+    /**
+     * @param mixed $extra
+     */
+    public function __construct(int $code = self::CONFIG_ERROR, ?string $message = 'Config Error', $extra = null, Throwable $previous = null)
+    {
+        parent::__construct($message, $code, $extra, $previous);
+    }
+}