Added operation_id for async APIs

[manasmulay]

Add operation_id (UUID) in callback, as well as create, restore, upload and download APIs. This helps when parallel operations are enabled and callbacks are to be sent at only one endpoint.

[Slach]

CI/CD failures are unrelated to your code, but related to your fork secrets settings, I will think how to fix it in main branch

[Slach]

could you run git pull origin master

[manasmulay]

Done. I will add support for operation_id in status API in a separate PR, will take me some time

[manasmulay]

I have accidentally closed this PR, adding this comment to reopen it

[coveralls]

Pull Request Test Coverage Report for Build 10608461877

Details

• 49 of 57 (85.96%) changed or added relevant lines in 2 files are covered.
• 271 unchanged lines in 12 files lost coverage.
• Overall coverage decreased (-2.0%) to 66.061%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
pkg/server/server.go	45	49	91.84%
pkg/server/utils.go	4	8	50.0%

Files with Coverage Reduction	New Missed Lines	%
pkg/backup/download.go	2	73.76%
pkg/backup/create.go	2	75.68%
pkg/backup/restore.go	2	67.54%
cmd/clickhouse-backup/main.go	2	79.53%
pkg/storage/object_disk/object_disk.go	5	69.43%
pkg/status/status.go	9	70.2%
pkg/config/config.go	10	72.49%
pkg/backup/backuper.go	18	64.16%
pkg/server/server.go	18	56.91%
pkg/storage/general.go	22	61.2%

Totals
Change from base Build 10602348319:	-2.0%
Covered Lines:	8720
Relevant Lines:	13200

---

💛 - Coveralls

[Slach]

thanks for contribution