Anti-raid levels don't by themselves do anything, but they can be
used in overrides to activate specific automod items.
Spam detection should now be more reliable and also combine further
spam messages after the initial detection into the archive.
Messages deleted by automod no longer create the normal deletion log
entry. Instead, the AUTOMOD_ACTION log entry contains the deleted
message or an archive if there are multiple (i.e. spam).
This loose pre-check checks the config schema by treating every object
as partial. This means that if a property exists, it's guaranteed to be
the correct type (e.g. object). However, there's no guarantee that all
or any properties exist.
This allows preprocessStaticConfig implementations to be much less
defensive and thus reduce boilerplate.
