feature request: loglevel audit

[Alex Kolesnik]

Hello,

Is there a chance to add one more log level for audit purposes to catch and log such information like:
- SSH_KEY_NAME
- server_request_direct_tcpip
- probably something else that's usually hidden but might be useful for audit or incident investigation purposes

Currently all that info is logged under log level "debug1", but it also logs a lot of extra info that is not needed for the specified purposes.

Thanks in advance!

-- 
Best regards,
Alex Kolesnik