relatively small 71 file 700 lines changed refactor/rework to combat mode/sprint and some miscellaneous things that totally aren't important (#11376)

* 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

* i hate you

* wrong button

* k

* ok

* bet

* 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

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

code/_onclick/hud/human.dm

@@ -128,7 +128,7 @@
 	//CITADEL CHANGES - sprint button
 	using = new /obj/screen/sprintbutton
 	using.icon = tg_ui_icon_to_cit_ui(ui_style)
-	using.icon_state = (owner.sprinting ? "act_sprint_on" : "act_sprint")
+	using.icon_state = ((owner.combat_flags & COMBAT_FLAG_SPRINT_ACTIVE) ? "act_sprint_on" : "act_sprint")
 	using.screen_loc = ui_movi
 	using.hud = src
 	static_inventory += using