Merge pull request #2216 from wm5370/patch-1

单文件发布时，导航功能报错

Author: 2881099

Extensions/FreeSql.Extensions.LazyLoading/LazyLoadingComplier.cs

@@ -1,6 +1,7 @@
 using Microsoft.CodeAnalysis;
 using Microsoft.CodeAnalysis.CSharp;
 using System;
+using System.CodeDom.Compiler;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;