清理引用，将NavigatorServices更改为使用Message来实现导航的切换

Data/Entities/DbMqtt.cs

@@ -2,10 +2,8 @@
 
 namespace PMSWPF.Data.Entities;
 
-
 public class DbMqtt
 {
-    [SugarColumn(IsPrimaryKey = true, IsIdentity = true)]//数据库是自增才配自增 
+    [SugarColumn(IsPrimaryKey = true, IsIdentity = true)] //数据库是自增才配自增 
     public int Id { get; set; }
-    
 }