实现了多画布下，节点的复制粘贴功能

Workbench/Models/MoveNodeModel.cs

@@ -0,0 +1,18 @@
+using Serein.Library;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Serein.Workbench.Models
+{
+    /// <summary>
+    /// 拖拽创建节点使用的数据
+    /// </summary>
+    internal class MoveNodeModel
+    {
+        public NodeControlType NodeControlType { get; set; }
+        public MethodDetailsInfo MethodDetailsInfo { get; set; }
+    }
+}