feat(backup): logs everything to stdout/err, implement lock file for both backup/restore

[brokenpip3]

Changes

• with this changes all the backup components will be log to stdout/err making the flow easy to check and debug:

2024-06-22 17:28:46 - INFO - [run] retaining only the 6 most recent backups, cleanup occurs every 60 seconds
2024-06-22 17:29:47 - INFO - [run] removing backups: 901277.tar.zstd
2024-06-22 17:30:28 - INFO - [restore] no other process are running, restoring
2024-06-22 17:30:28 - INFO - [restore] restore backup with backup number #901283
2024-06-22 17:30:28 - INFO - [restore] Backup file found, proceeding
2024-06-22 17:30:28 - INFO - [restore] restoring 901283 Done
2024-06-22 17:30:34 - INFO - [backup] no other backup process are running
2024-06-22 17:30:34 - INFO - [backup] running backup 901284
2024-06-22 17:30:35 - INFO - [backup] backup 901284 was completed without warnings
2024-06-22 17:30:35 - INFO - [backup] cleaning /backup/tmp.8lKrESTSPY and trap file /backup/_backup_901284_is_running
2024-06-22 17:30:35 - INFO - [backup] 901284 done

• Implement a lock file for both backup and restore, the script will wait (and can be instructed with count and time) if another process is running by checking the lock file.

• Several small cosmetic changes

• Add docs

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• Includes docs (if user facing)
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Reviewer Notes

If API changes are included, additive changes must be approved by at least two OWNERS and backwards incompatible changes must be approved by more than 50% of the OWNERS.