feat:添加长连接，强制下线功能

Yi.Furion.Net6/Yi.Furion.Application/Rbac/Services/IOnlineService.cs

@@ -0,0 +1,12 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Yi.Furion.Application.Rbac.Services
+{
+    public interface IOnlineService
+    {
+    }
+}