Add fullfiletimelist files for faster/easier mirroring

Quick note about adding quick-fedora-mirror support to the AlmaLinux data. This makes a few things easier, and it's not just for MirrorManager and the server side.

Scripts: https://pagure.io/quick-fedora-mirror/

Example file: https://dl.fedoraproject.org/pub/epel/fullfiletimelist-epel
