feat: 添加噜噜支付SDK和前端懒加载指令

SDK_2.0/SDK/refund.php

@@ -0,0 +1,19 @@
+<?php
+/**
+ * 退款
+ */
+require_once("lib/epay.config.php");
+require_once("lib/EpayCore.class.php");
+
+$out_refund_no = date("YmdHis").rand(111,999);
+$trade_no = '2024071519404366151';
+$money = '1.00';
+$epay = new EpayCore($epay_config);
+try{
+    $result = $epay->refund($out_refund_no, $trade_no, $money);
+}catch(Exception $e){
+    echo $e->getMessage();
+    exit;
+}
+
+print_r($result);