Support Gio menus in tray

[xi]

libayatana-appindicator was recently rewritten and is now using Gio menues instead of the long-unmaintained libdbusmenu. While this is not compliant with the spec, breaks most implementation and was barely communicated, I think the change makes sense from a technical point of view, especially because it adds compatibility with Gtk4.

There is an open issue about this, but I don't expect that they will go back. So would it be possible to add support for Gio menus to the tray module?

[mmj2023]

I am having similar issues my tray is not working.