添加同步订单rpc接口

src/Service/Interfaces/SyncDataService/SyncMagentoServiceInterface.php

+<?php
+/**
+ * Created by PhpStorm.
+ * User: qiudongfang
+ * Date: ${DATA}
+ * Time: 下午2:57
+ */
+
+namespace Meibuyu\Rpc\Service\Interfaces\SyncDataService;
+
+interface SyncMagentoServiceInterface
+{
+    /**
+     * @param $platformOrderId 平台单号id
+     * @param int $pageSize 每页最多展示50条
+     * @return array
+     */
+    public function syncOrders($platformOrderId, $pageSize = 10):array;
+}