Declares the new arch-all binary package in debian/control (depending on
authforge-gui + gnome-control-center) and wires its single data file
(gnome-integration/io.dangerousthings.AuthForge.UsersPanel.desktop) into
debian/rules' override_dh_auto_install so it lands in
/usr/share/applications/. The metapackage already Suggests:
authforge-gnome-integration, so no change there.