Melee Stagger (#11443)

* combat refactoring

* i hate this

* mobility flags part 2 time xd

* whew

* stuff

* a

* ok

* changes

* Wew

* k

* add flags

* FUCKYOUVORE

* fixes

* typo

* no using this in hard stamcrit

* update icon

* woopsy

* . = ..()

* sigh

* Update living_combat.dm

* wew

* wups

* fix

* wack

* animation is now shorter

* linter save me

* i hate you

* k

* k

* k

* i hate you

* wrong button

* k

* ok

* bet

* bet

* bet

* Update item_attack.dm

* k

* Update code/modules/mob/living/living_combat.dm

Co-Authored-By: Ghom <42542238+Ghommie@users.noreply.github.com>

* Update code/modules/mob/living/living_combat.dm

Co-Authored-By: Ghom <42542238+Ghommie@users.noreply.github.com>

* Update code/modules/mob/living/living_combat.dm

Co-Authored-By: Ghom <42542238+Ghommie@users.noreply.github.com>

* early returns

* skreee

* agony

* k

* k

* k

* k

* wack

* compile

* wack

* fix

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

code/datums/status_effects/debuffs.dm

@@ -90,6 +90,7 @@
 /datum/status_effect/staggered
 	id = "staggered"
 	blocks_sprint = TRUE
+	alert_type = null
 
 /datum/status_effect/staggered/on_creation(mob/living/new_owner, set_duration)
 	if(isnum(set_duration))