Add pre-testing version of the webinterface

ChatTwo/Util/IconUtil.cs

@@ -1,5 +1,7 @@
 using System.Runtime.CompilerServices;
 using System.Runtime.InteropServices;
+using SixLabors.ImageSharp;
+using SixLabors.ImageSharp.PixelFormats;
 
 namespace ChatTwo.Util;
 
@@ -145,4 +147,11 @@ internal static class IconUtil {
             return new GfdFileView(new ReadOnlySpan<byte>(Unsafe.AsPointer(ref GfdFile[0]), GfdFile.Length));
         }
     }
+
+    public static byte[] ImageToRaw(this Image<Rgba32> image)
+    {
+        var data = new byte[4 * image.Width * image.Height];
+        image.CopyPixelDataTo(data);
+        return data;
+    }
 }