fix #I9J6WS 增加加签逻辑

OpenAuth.App/FlowApproverApp/Request/QueryApproverReq.cs

@@ -0,0 +1,16 @@
+namespace OpenAuth.App.Request
+{
+    public class QueryApproverReq
+    {
+        /// <summary>
+        /// 获取或设置流程实例ID
+        /// </summary>
+        public string FlowInstanceId { get;set; }
+
+        /// <summary>
+        /// 节点Id
+        /// </summary>
+        public string ActivityId{ get;set; }
+
+    }
+}