Enhancement of the application log functionality enabling to write the auditlog on a file

[evilaliv3]

Proposal

This feature is related to the work of analysis and integration of the enhancement of the application log functionality enabling to log no only on the audit log table but also on a log file proposed in https://github.com/globaleaks/globaleaks-whistleblowing-software/pull/4314

[evilaliv3]

Status of the implementation:

• The feature seems complete and not significant changes.

Actions needed to proceed with the integration is:

• [ ] Isolate the changes specific to the feature in a dedicated branch

Internal notes for future implementations after the integration:

• Current implementation seems to not consider log rotation. Probably we could consider overwriting the log file present on the disk by using the log table everytime log rotation is performed in the "cleaning" job.
• This feature might be changed or replaced in the future when https://github.com/globaleaks/globaleaks-whistleblowing-software/issues/2580 will be implemented to achieve to be able to propagate audit logs to a SIEM system