feat: 对接chathub用户列表

Yi.Abp.Net8/module/chat-hub/Yi.Framework.ChatHub.Domain.Shared/Caches/ChatOnlineUserCacheItem.cs

@@ -0,0 +1,65 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Yi.Framework.ChatHub.Domain.Shared.Caches
+{
+    public class ChatOnlineUserCacheItem
+    {
+        public ChatOnlineUserCacheItem()
+        { 
+        
+        
+        }
+        /// <summary>
+        /// 用户id
+        /// </summary>
+        public Guid UserId { get; set; }
+
+        /// <summary>
+        /// 用户名称
+        /// </summary>
+        public string UserName { get; set; }
+
+        /// <summary>
+        /// 用户头像
+        /// </summary>
+        public string UserIcon { get; set; }
+
+        /// <summary>
+        /// 客户端id
+        /// </summary>
+        public string ClientId { get; set; }
+
+        /// <summary>
+        /// 连接时间
+        /// </summary>
+        public DateTime CreationTime { get; }=DateTime.Now;
+
+        public override string ToString()
+        {
+            return System.Text.Json.JsonSerializer.Serialize(this);
+        }
+    }
+
+    public class ChatOnlineUserCacheKey
+    {
+        public string CacheKeyPrefix;
+        public ChatOnlineUserCacheKey(string cacheKeyPrefix )
+        {
+            CacheKeyPrefix=cacheKeyPrefix;
+        }
+
+        public string GetKey()
+        {
+            return $"{CacheKeyPrefix}ChatOnline";
+        }
+
+        public string GetField(Guid userId)
+        {
+            return $"{userId}";
+        }
+    }
+}