reflector.service will update pacman's mirrorlist after a network connection is established in the live system. Fixes https://gitlab.archlinux.org/archlinux/archiso/-/issues/26 .
configs/releng/airootfs/etc/systemd/system/multi-user.target.wants/iwd.service: Adding a symlink to /usr/lib/systemd/system/iwd.service to enable iwd in airootfs (and thus on the image). Closes #18