It can now add and schedule archiving tasks. Since archivebox will use
Crontab module (which uses `/usr/bin/crontab`), the scheduling with the
interface is out of the question. What better way to make it possible
than creating a home-manager module for it?
While it is easier to maintain the modules by prefixing them all with
`modules`, it is not easy when used from other flakes and/or modules.
This is my attempt on making it easier with appropriate namespaces.
Update home-manager user from the restructure
