Include offline rules in backups

Feature description:

Offline rules at the moment are very tedious to add, having to enter every artist and use the 3 dots to do that. Making this for possibly hundreds of artists is already boring enough, and when changing device you have to do that again.

Problem solved:

Having to re-add the offline rules manually.

Brought benefits:

Quick restore to avoid doing the whole process again.

Other application solutions:



Additional description and context:



Screenshots / Mockup: