Convert the /backfill endpoint to a kubernetes Job run periodically
See https://github.com/huggingface/datasets-server/pull/708#issuecomment-1406319901 and following comments.

Maybe we should not have this endpoint as such. See the related issue: https://github.com/huggingface/datasets-server/issues/736. Maybe #736 should be fixed first, then see how we implement a backfill trigger.
Convert the /backfill endpoint to a kubernetes Job run periodically: See https://github.com/huggingface/datasets-server/pull/708#issuecomment-1406319901 and following comments.

Maybe we should not have this endpoint as such. See the related issue: https://github.com/huggingface/datasets-server/issues/736. Maybe #736 should be fixed first, then see how we implement a backfill trigger.