GTK automatically loads and sets up the action and keyboard shortcut for the Keyboard Shortcuts dialog. We don't need to manually do it as long as we put everything in the right place. See https://docs.gtk.org/gtk4/class.Application.html#automatic-resources
Basic configuration of qlite, xmpp-vala, the Dino library and the Dino application are supported. There's no support for the plugins. This e.g. enables using the Vala language server.