Add option to append file extension in ExtractToDirectory

Introduced an 'appendExtension' parameter to ExtractToDirectory, allowing guessed file extensions to be appended to extracted resource filenames. This enhances usability by making extracted files easier to identify by type.

QuickLook.Plugin/QuickLook.Plugin.ArchiveViewer/Plugin.MoreMenu.cs

@@ -122,7 +122,7 @@ public sealed partial class Plugin
                 // Chromium resource package file v5 extraction
                 await Task.Run(() =>
                 {
-                    PakExtractor.ExtractToDirectory(_path, dialog.FileName);
+                    PakExtractor.ExtractToDirectory(_path, dialog.FileName, appendExtension: true);
                 });
             }
         }