feat: 完善聊天模块

Yi.Abp.Net8/module/chat-hub/Yi.Framework.ChatHub.Application.Contracts/Dtos/GroupMessageInputDto.cs

@@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Yi.Framework.ChatHub.Application.Contracts.Dtos
+{
+    public class GroupMessageInputDto
+    {
+        /// <summary>
+        /// 消息内容
+        /// </summary>
+        public string Content { get; set; }
+    }
+}