Use sec to replace rsyslog

[votdev]

Rsyslog is currently only used for looking into syslog and sending emails if there are log messages from pamfaillock.

• https://packages.debian.org/bookworm/sec
• https://github.com/simple-evcorr/sec
• https://simple-evcorr.github.io/man.html
• https://github.com/simple-evcorr/rulesets
• https://www.admin-magazine.com/Archive/2014/20/Simple-Event-Correlator
• https://www.usenix.org/system/files/login/articles/09_lang-online.pdf

[votdev]

I have to reject this issue because rsyslog cannot be removed because it is used for syslog forwarding. This is very sad because sec seems to be a pretty cool feature.
Sending emails based on found log entries can also be done by rsyslog; which is done for pam_faillock messages.