修改了无法保存项目文件的bug

NodeFlow/NodeStaticConfig.cs

@@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Serein.NodeFlow
+{
+    public static class NodeStaticConfig
+    {
+        /// <summary>
+        /// 节点的命名空间
+        /// </summary>
+        public const string NodeSpaceName = $"{nameof(Serein)}.{nameof(Serein.NodeFlow)}.{nameof(Serein.NodeFlow.Model)}";
+    }
+}