Feature Request: Named targets

[ceremcem]

trafficstars

Extending https://github.com/digint/btrbk/issues/356, targets should have an option to have an alias. This will bring the ability to:

1. Disable all targets temporarily,
2. Enable some of the targets (present/reachable)
3. Enable all of the targets

So we could keep only one configuration file for multiple backup disks/locations and override options to skip some of them due to the temporary time constraints or target presence.

[digint]

you can specify group for this in btrbk.conf, see: https://github.com/digint/btrbk/blob/master/doc/btrbk.conf.5.asciidoc#grouping-options

also look at the noauto option, this way you can trigger section on-demand (e.g. btrbk run mygroup)