Add restore setting "restore_broken_parts_as_detached"

[vitlibar]

Changelog category:

• Improvement

Changelog entry:

Added restore setting restore_broken_parts_as_detached: if it's true the RESTORE process won't stop on broken parts while restoring, instead all the broken parts will be copied to the detached folder with the prefix `broken-from-backup'. If it's false the RESTORE process will stop on the first broken part (if any). The default value is false.

Added backup setting check_parts: If it's true the BACKUP process will check that parts are not broken before putting them into a backup. The default value is true.

Before this PR a single broken part added to a backup could make the entire table non-restorable.

[robot-ch-test-poll4]

This is an automated comment for commit 988fd9e with description of existing statuses. It's updated for the latest CI running
The full report is available here
The overall status of the commit is 🟢 success

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[vitlibar]

I decided to change my solution in this PR, will update the PR soon. Please don't review it now, review it later :)

[vitlibar]

I decided to change my solution in this PR, will update the PR soon. Please don't review it now, review it later :)

done, please review it now :)

[pufit]

LGTM!