Kicks Martial Arts out of the attack chain (yippee), makes it use signals, plus a large clean up of existing martial arts (#81097)

## About The Pull Request

- Kicks Martial Arts out of the attack chain. 
- All Martial Arts attacks are now handled via unarmed attack or grab
signals
- This means all martial arts are now technically on the living level,
allowing any mob that can unarmed attack to martial arts. Sort of. YMMV.

- All martial arts block checking is now handled by the arts themselves,
meaning you can selectively decide for a martial arts strike to not be
blocked. Maybe good for the future.

- A comprehensive cleanup of all existing martial arts. Improving var
names, code, adding some missing animation calls, etc.

Fixes #74829

## Why It's Good For The Game

Untangles the mess that is martial arts, making it a lot easier to work
with the attack chain and making it overall a ton more consistent.

## Changelog

🆑 Melbert
refactor: Big martial arts refactor, they should now overall act a ton
more consistent. Also technically any mob can do martial arts. Let me
know if something is funky.
/🆑

---------

Co-authored-by: Ghom <42542238+Ghommie@users.noreply.github.com>

code/modules/library/skill_learning/job_skillchips/chef.dm

@@ -19,5 +19,5 @@
 	style.teach(user, make_temporary = TRUE)
 
 /obj/item/skillchip/job/chef/on_deactivate(mob/living/carbon/user, silent = FALSE)
-	style.remove(user)
+	style.fully_remove(user)
 	return ..()