增加项目，分层

Store.Framework/HttpExtension/ServerHttpItem.cs

@@ -0,0 +1,28 @@
+
+using MAX.Core.Helpers;
+using Store.Framework.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Store.Client.HttpExtension
+{
+    public class ServerHttpItem : HttpItem
+    {
+        public ShopBase Shop { get; private set; }
+        public ServerHttpItem()
+        {
+
+        }
+        public ServerHttpItem(ShopBase shop)
+        {
+            Shop = shop;
+        }
+        /// <summary>
+        /// 是否已签名
+        /// </summary>
+        public bool IsSign { get; set; }
+    }
+}