- Add antergos-release, antergos-next-keyring, antergos-wallpapers to
Default netinstall group (both global and online) so installed system
keeps Antergos branding instead of appearing as plain Artix
- Populate services-artix.conf (both online + offline) with service names
so SDDM, NetworkManager, dbus, etc. are enabled after install (fixes
boot-to-TTY issue)
- Create grubcfg.conf for online mode with GRUB_THEME default so
antergos-grub-theme is actually applied by grub-mkconfig
