1. 脚本转c#代码功能，支持了[Flipflop]触发器节点

2. 修复了Script.StringNode转C#中存在多余的转义符的问题
3. 为IFlowControl添加了Task StratNodeAsync(string)的接口，用于在代码生成场景中的流程控制
4. 调整了关于Lightweight运行环境的文件位置

Library/FlowNode/Env/FlowCallTree.cs

@@ -0,0 +1,76 @@
+using Serein.Library.Api;
+using System;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+
+namespace Serein.Library
+{
+    /// <summary>
+    /// 流程调用树，管理所有的调用节点
+    /// </summary>
+    public class FlowCallTree : IFlowCallTree
+    {
+
+        private readonly SortedDictionary<string, CallNode> _callNodes = new SortedDictionary<string,CallNode>();
+
+        /// <inheritdoc/>
+        public List<CallNode> StartNodes { get; set; }
+
+        /// <inheritdoc/>
+        public List<CallNode> GlobalFlipflopNodes { get; set; }
+
+
+        /// <summary>
+        /// 索引器，允许通过字符串索引访问CallNode
+        /// </summary>
+        /// <param name="index"></param>
+        /// <returns></returns>
+        public CallNode this[string index]
+        {
+            get
+            {
+                _callNodes.TryGetValue(index, out CallNode callNode);
+                return callNode;
+            }
+            set
+            {
+                // 设置指定索引的值
+                _callNodes.Add(index, value);
+            }
+        }
+
+       
+
+        /// <summary>
+        /// 添加一个调用节点到流程调用树中
+        /// </summary>
+        /// <param name="nodeGuid"></param>
+        /// <param name="action"></param>
+        public void AddCallNode(string nodeGuid, Action<IFlowContext> action)
+        {
+            var node = new CallNode(nodeGuid, action);
+            _callNodes[nodeGuid] = node;
+        }
+
+        /// <summary>
+        /// 添加一个调用节点到流程调用树中，使用异步函数
+        /// </summary>
+        /// <param name="nodeGuid"></param>
+        /// <param name="func"></param>
+        public void AddCallNode(string nodeGuid, Func<IFlowContext, Task> func)
+        {
+            var node = new CallNode(nodeGuid, func);
+            _callNodes[nodeGuid] = node;
+        }
+
+        /// <summary>
+        /// 获取指定Key的CallNode，如果不存在则返回null
+        /// </summary>
+        /// <param name="key"></param>
+        /// <returns></returns>
+        public CallNode Get(string key)
+        {
+            return _callNodes.TryGetValue(key, out CallNode callNode) ? callNode : null;
+        }
+    }
+}