feat(wxapi): 封装公众平台、开放平台接口

src/SKIT.FlurlHttpClient.Wechat.Api/Models/Merchant/Group/MerchantGroupPropertyModifyResponse.cs

@@ -0,0 +1,12 @@
+using System;
+using System.Collections.Generic;
+
+namespace SKIT.FlurlHttpClient.Wechat.Api.Models
+{
+    /// <summary>
+    /// <para>表示 [POST] /merchant/group/propertymod 接口的响应。</para>
+    /// </summary>
+    public class MerchantGroupPropertyModifyResponse : WechatApiResponse
+    {
+    }
+}