Feature request : Prune in config panel

[tomdereub]

Describe the bug

Actually, the default pruning behaviour of borg is used : --keep-hourly 2 --keep-daily=7 --keep-weekly=8 --keep-monthly=12. There is no way to change it in a stable way.

Expected behavior

It would be great to be able to change this behaviour in the config panel of the app. In my case, I need to keep just a few days of a hourly backup, and on a daily backup I want to keep an annual backup of each year, without limit (or like ten years).

[tio-trom]

This! And make it more easy to understand like: keep backups for X amount of days. I have to always nuke my backups because they take so much space.