Make Impostor's AC modular (#559)

Make Impostor's AC modular (#559)

* Add extra configuration options for the anticheat

* Implement option to exempt hosts from AC checks

* Add AntiCheatConfig to InnerNetObject and friends

* Categorize calls in InnerNetObject.Anticheat

* Categorize other calls to ReportCheatAsync

* Update cosmetics AC handling

When Innersloth changed SetHat etc to SetHatStr as part of the cosmicube
update we accidentally created a few dead methods. Restore and update
the code.

* Push up cheat category to ReportCheatAsync

This makes it possible to log failed checks for diagnosis. Also much
cleaner now that we don't have to push AntiCheatConfig everywhere.
Should've done this immediately q.q

* Add back old version of ReportCheatAsync

some plugins used this method. affected plugins should rebuild after the
next impostor release

* Add documentation for modular anticheat

* Address comments

* Sort AntiCheatConfig keys

* Rework the option to allow cheating hosts

This option should actually be tristate: to not break host-only mods we
should disable the anticheat for hosts running host-only mods.

* Document CheatingHostMode

* Split Limits category in Color and Name Limits