Add option to ask for confirmation before starting a scheduled backup

[stefanobartoletti]

I think it would be useful to be able to schedule backups, while still being able to decide if it is the right moment to run Borg.

One possible use case is when having a backup repository on an external device, that maybe is used also for other purposes.

Having multiple concurrent I/O processes may slow down operations, or it can simply not be the right moment to run a backup.

In this case, when a backup is scheduled to start, a notification asking for confirmation should appear, letting the user manually confirm its start.

[github-actions]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[stefanobartoletti]

Just commenting to prevent auto-close.

Some feedback would be nice, even if it is not planned:)

[techaakritisha]

Hello @stefanobartoletti I would love to work on this issue. Please assigned it to me.

[m3nu]

This feature suggestions seems overly specific to me. I have trouble seeing how this is useful for many users. If you don't want automatic backups, just don't enable them.

[stefanobartoletti]

I do want automatic backups.
I would also like to be able to set an optional confirmation before running a scheduled backup, because there can be valid reasons for not being the right moment to take it.