Io abstraction (#7293)

Co-authored-by: p-storm <paul.de.man@gmail.com>

src/modules/launcher/Wox.Infrastructure/Storage/PluginJsonStorage`1.cs

@@ -2,7 +2,7 @@
 // The Microsoft Corporation licenses this file to you under the MIT license.
 // See the LICENSE file in the project root for more information.
 
-using System.IO;
+using System.IO.Abstractions;
 using Wox.Plugin;
 
 namespace Wox.Infrastructure.Storage
@@ -10,6 +10,9 @@ namespace Wox.Infrastructure.Storage
     public class PluginJsonStorage<T> : JsonStorage<T>
         where T : new()
     {
+        private static readonly IFileSystem FileSystem = new FileSystem();
+        private static readonly IPath Path = FileSystem.Path;
+
         public PluginJsonStorage()
         {
             // C# related, add python related below