Make all the actions (open website, open preferences, remove extension) and information (description, version number) readily available. Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/2114>
Now that we switched to AdwApplication, we can automate loading the custom stylesheet by simply using the expected name and resource prefix. Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1997>