PSA to #GTK and #GNOME app developers: if your application deals with saving files, it is extra nice to show an in-app notification with an "Open Folder" action button so the user can directly open the containing folder in their file manager afterwards!

Convenience API function in #GTK4 here: https://docs.gtk.org/gtk4/method.FileLauncher.open_containing_folder.html

Example feature requests here:
* https://github.com/GeopJr/Tuba/issues/1585
* https://gitlab.gnome.org/GNOME/evolution/-/issues/3166
* https://dev.gajim.org/gajim/gajim/-/issues/12511
* https://gitlab.gnome.org/GNOME/epiphany/-/issues/2793
* https://github.com/ryonakano/reco/issues/238