refactor: ♻️ 基础框架的实体更新逻辑 (#137)

Co-authored-by: tk <fiyne1a@dingtalk.com>

src/backend/NetAdmin.SysComponent.Application/Services/Sys/Dependency/ISiteMsgFlagService.cs

@@ -1,4 +1,5 @@
 using NetAdmin.Application.Services;
+using NetAdmin.Domain.Dto.Sys.SiteMsgFlag;
 using NetAdmin.SysComponent.Application.Modules.Sys;
 
 namespace NetAdmin.SysComponent.Application.Services.Sys.Dependency;
@@ -6,4 +7,10 @@ namespace NetAdmin.SysComponent.Application.Services.Sys.Dependency;
 /// <summary>
 ///     站内信标记服务
 /// </summary>
-public interface ISiteMsgFlagService : IService, ISiteMsgFlagModule;
+public interface ISiteMsgFlagService : IService, ISiteMsgFlagModule
+{
+    /// <summary>
+    ///     设置用户站内信状态
+    /// </summary>
+    Task SetUserSiteMsgStatusAsync(SetUserSiteMsgStatusReq req);
+}