添加全局引用

Signed-off-by: skywolf627 <skywolf627@qq.com>

Admin.NET/Admin.NET.Application/GlobalUsings.cs

@@ -6,4 +6,7 @@ global using Mapster;
 global using Microsoft.AspNetCore.Mvc;
 global using Microsoft.Extensions.DependencyInjection;
 global using SqlSugar;
-global using System.Threading.Tasks;
+global using System.Threading.Tasks;
+global using System;
+global using System.Collections.Generic;
+global using System.ComponentModel.DataAnnotations;