Description

Adds ttlSecondsAfterFinished option to automatically delte finished and errored scans after a defined time in seconds. This will delete the specific scan and not just a scanner/parser job.
Also sets the finishedAt attribute to the timestamp a scan is marked as "Done" or "Errored".

Checklist

• Test your changes as thoroughly as possible before you commit them. Preferably, automate your test by unit/integration tests.
• Make sure that all your commits are signed-off and that you are added to the Contributors file.
• Make sure that all CI finish successfully.
• Optional (but appreciated): Make sure that all commits are Verified.