Backup and Migrate integration

retagging

Another idea could be to allow using Drush, if it's present, since that also offers the archive:dump command

Backup your code, files, and database into a single file.

https://www.drush.org/latest/commands/archive_dump/

It could be part of a unified backup sub-module, or in its own sub-module?

I created a separate issue for Drush archive:dump integration.