- add file extension

Lib.Driver/DriverLoader.cs

@@ -12,6 +12,8 @@ namespace Lib.Driver
 {
     public class DriverLoader : IDriverLoader
     {
+        public const string DRIVER_FILE_EXTENSION = "myd";
+        
         public IDriver? Load(string driverPath)
         {
             XmlReader xmlReader = XmlReader.Create(File.OpenRead(driverPath));