优化了添加设备时，并添加和更新菜单栏

Message/DialogMessage.cs

@@ -1,9 +0,0 @@
-namespace PMSWPF.Message;
-
-public class DialogMessage
-{
-    public bool IsCancel { get; set; }
-    public bool IsConfirm { get; set; }
-    public Object? Request { get; set; }
-    public Object? Response { get; set; }
-}

Message/OpenDialogMessage.cs

@@ -1,21 +0,0 @@
-using CommunityToolkit.Mvvm.Messaging.Messages;
-
-namespace PMSWPF.Message;
-
-public class OpenDialogMessage:RequestMessage<DialogMessage>
-{
-    // public bool IsCancel { get; set; }
-    // public bool IsConfirm { get; set; }
-    // public Object? Request { get; set; }
-    // public Object? Response { get; set; }
-    public DialogMessage Message { get; set; }
-
-    public OpenDialogMessage()
-    {
-    }
-
-    public OpenDialogMessage(DialogMessage message)
-    {
-        Message = message;
-    }
-}