sysutils/autorestic: New port

Autorestic is a wrapper around the amazing restic. While being amazing
the restic cli can be a bit overwhelming and difficult to manage if you
have many different locations that you want to backup to multiple
locations. This utility is aimed at making this easier.

WWW: https://github.com/cupcakearmy/autorestic

PR: 275548
Approved by: submitter is maintainer