重构中day1，写了很多，不知道怎么说清楚

Workbench/ViewModels/FlowCanvasViewModel.cs

@@ -0,0 +1,19 @@
+using CommunityToolkit.Mvvm.ComponentModel;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Serein.Workbench.ViewModels
+{
+    public partial class FlowCanvasViewModel : ObservableObject
+    {
+
+        [ObservableProperty]
+        private bool _isConnectionInvokeNode;
+
+        [ObservableProperty]
+        private bool _isConnectionArgSourceNode;
+    }
+}