Make VestelEvc04 driver public

TestApp/Driver/VestelEvc04.cs

@@ -1,10 +1,9 @@
 using NModbus;
-using System.ComponentModel.Design.Serialization;
 using System.Net.Sockets;
 
 namespace TestApp.Driver
 {
-    internal class VestelEvc04 : IChargerDriver, IDisposable
+    public class VestelEvc04 : IChargerDriver, IDisposable
     {
         private IModbusMaster? _Modbus;
         private bool _Running;