Describe the problem

Currently tauri uses CFBundleDocumentTypes with CFBundleTypeExtensions to register file extension to OS.

However, It looks CFBundleTypeExtensions is completely deprecated and not documented in current documentation of CFBundleDocumentTypes.

Describe the solution you'd like

So I think it's better to associate with UTExportedTypeDeclarations instead.

This would improve the UX since we can descrive the base type of the type like it's json-based.

Alternatives considered

No response

Additional context

No response