chore: 升级示例项目为基于 .NET 6.0 的实现

samples/SKIT.FlurlHttpClient.Wechat.Api.Sample_Net6/Services/DistributedLock/Implements/DistributedLockFactory.cs

@@ -0,0 +1,21 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Threading.Tasks;
+using Medallion.Threading;
+using Medallion.Threading.FileSystem;
+
+namespace SKIT.FlurlHttpClient.Wechat.Api.Sample_Net5.Services.DistributedLock.Implements
+{
+    class DistributedLockFactory : IDistributedLockFactory
+    {
+        private readonly DirectoryInfo _lockFileDirectory = new DirectoryInfo(Environment.CurrentDirectory);
+
+        public IDistributedLock Create(string lockName)
+        {
+            // NOTICE: 单机演示基于文件实现分布式锁，生产项目请替换成其他实现
+            return new FileDistributedLock(_lockFileDirectory, lockName);
+        }
+    }
+}