* simplify `_setup_logrotate`
* adjust Rspamd's log file and improve it's management
* add information to docs about Rspamd log
* update log query helper to allow another file location
* bail in case `LOGROTATE_INTERVAL` is invalid
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Co-authored-by: Brennan Kinney <5098581+polarathene@users.noreply.github.com>
Dominic Germain
Georg Lauterbach
Casper