feat(tenpayv3): 新增查询子商户管控情况接口

src/SKIT.FlurlHttpClient.Wechat.TenpayV3/Extensions/WechatTenpayClientExecuteMerchantOperationManageExtensions.cs

@@ -0,0 +1,33 @@
+using System;
+using System.Net.Http;
+using System.Threading;
+using System.Threading.Tasks;
+using Flurl.Http;
+
+namespace SKIT.FlurlHttpClient.Wechat.TenpayV3
+{
+    public static class WechatTenpayClientExecuteMerchantOperationManageExtensions
+    {
+        /// <summary>
+        /// <para>异步调用 [GET] /mch-operation-manage/merchant-limitations/sub-mchid/{sub_mchid} 接口。</para>
+        /// <para>
+        /// REF: <br/>
+        /// <![CDATA[ https://pay.weixin.qq.com/docs/partner/apis/limited-functions-and-reasons/mch-limitations/query-sub-mch-limitation.html ]]>
+        /// </para>
+        /// </summary>
+        /// <param name="client"></param>
+        /// <param name="request"></param>
+        /// <param name="cancellationToken"></param>
+        /// <returns></returns>
+        public static async Task<Models.GetMerchantOperationManageMerchantLimitationsBySubMerchantIdResponse> ExecuteGetMerchantOperationManageMerchantLimitationsBySubMerchantIdAsync(this WechatTenpayClient client, Models.GetMerchantOperationManageMerchantLimitationsBySubMerchantIdRequest request, CancellationToken cancellationToken = default)
+        {
+            if (client is null) throw new ArgumentNullException(nameof(client));
+            if (request is null) throw new ArgumentNullException(nameof(request));
+
+            IFlurlRequest flurlReq = client
+                .CreateFlurlRequest(request, HttpMethod.Get, "mch-operation-manage", "merchant-limitations", "sub-mchid", request.SubMerchantId);
+
+            return await client.SendFlurlRequestAsJsonAsync<Models.GetMerchantOperationManageMerchantLimitationsBySubMerchantIdResponse>(flurlReq, data: request, cancellationToken: cancellationToken).ConfigureAwait(false);
+        }
+    }
+}