调整了一下各种命令的位置，便于其他应用调用

AIStudio.Wpf.DiagramDesigner/Models/SerializableObject.cs

@@ -0,0 +1,41 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Xml.Serialization;
+
+namespace AIStudio.Wpf.DiagramDesigner.Models
+{
+    [Serializable]
+    [XmlInclude(typeof(SerializableItem))]
+    public class SerializableItem
+    {
+        [XmlIgnore]
+        public Type Type
+        {
+            get; set;
+        }
+
+        [XmlAttribute]
+        public string TypeName
+        {
+            get; set;
+        }
+
+        [XmlAttribute]
+        public string ObjectJson
+        {
+            get; set;
+        }
+    }
+
+    [Serializable]
+    [XmlInclude(typeof(SerializableObject))]
+    public class SerializableObject
+    {
+        [XmlArray]
+        public List<SerializableItem> DesignerItems { get; set; } = new List<SerializableItem>();
+
+        [XmlArray]
+        public List<SerializableItem> Connections { get; set; } = new List<SerializableItem>();
+    }
+}