Feature Request: Add an option to use the Grandfather, Father and Son backup rotation principle

[AN1MATEK]

This is a rather simple feature that would give users access to very old backups, while still using relatively low disk space.

The strategy is simply to save one backup for each of last 7 days, last 4 weeks, last 12 months and last x years.

I give credit for this idea to https://github.com/framps/raspiBackup, which I use for my Raspberry Pi.

Option could be opt-in and stay parallel to the current strategy.

Thank you for the work put in here.

[GlassedSilver]

Great idea and this is similar to what Apple's Time Machine feature does, arguably one of the best backup tools UX-wise to exist for consumers.

IMHO however, this would really ask for incremental backup functionality to be integrated first with the occasional full-backup thrown in there for good measure so a single base backup having corruption doesn't propagate uncontrolled throughout the entire backup chain.