Include AIO version in borg backups

[asavageiv]

Is your feature request related to a problem? Please describe.

I am trying to restore from an old AIO borgbackup but I don't know what version of AIO I was on when the backup was created. I'm not sure if AIO is backwards compatible with old backups or not, but it makes sense to me to use the same version to restore as was used to create the backup. Unfortunately, the only way I've found to figure that out is by looking at the Nextcloud version from the backup and then searching through the code for the associated AIO version.

Describe the solution you'd like

The first place I looked was in the nextcloud_aio_mastercontainer volume in the backup. I'd love for there to be a version file there that contained the AIO version in use when the backup was created.

Describe alternatives you've considered

It could also exist somewhere in the configuration.json.
Even better might be to have the AIO backup tool automatically determine the AIO version and warn if you're restoring from an incompatible one.

Additional context

None

[szaimen]

I'm not sure if AIO is backwards compatible with old backups or not

It is