feat: add timeout support

[kyranet]

Changelog

• Add s!timeout and s!untimeout.
• Add events.timeout configuration key, for logging manual actions.
• Manual or external prunes now report the moderator more consistently.

Private changelog

#2595 introduced a few bugs... all fixed in this PR.

• Added action hooks for the moderation logger.
• Fixed double completion, causing timed entries to duplicate the logs.
• Fixed ModerationActionTimeout not setting the data correctly.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.62%. Comparing base (14e3470) to head (a98a953).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2594      +/-   ##
==========================================
+ Coverage   85.58%   85.62%   +0.03%     
==========================================
  Files          98       98              
  Lines        3657     3665       +8     
  Branches      212      293      +81     
==========================================
+ Hits         3130     3138       +8     
  Misses        523      523              
  Partials        4        4              

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