Reworks the morph. Makes it a more stealth ambush oriented antag (#15208)

* Reworks the morph

* Hunger points. Reproduce. Sprites. Other tweaks

* vent open. Convert to spells. Valid checks. Minor tweaks

* undo life hack

* Icons, Fixes, No more morphed lights

* Item eat fix. All eating takes 3 seconds

* Add sounds

* Fixes and tweaks. Pass airlock ability. Ambush screen alert

* Steel review fixes

* New dead morph sprite from Pewtershmitz

* Pass airlock sprite provided by Pewtershmitz

* No barsigns or cryo cells as mimic

* Gluttany ruin change

* Color fix. No forms fix

* fix the stupid icons

* Apply suggestions from code review

Co-authored-by: dearmochi <shenesis@gmail.com>

Co-authored-by: joep van der velden <15887760+farie82@users.noreply.github.com>
Co-authored-by: dearmochi <shenesis@gmail.com>

code/modules/antagonists/_common/antag_spawner.dm

@@ -269,10 +269,7 @@
 /obj/item/antag_spawner/morph/spawn_antag(client/C, turf/T, type = "", mob/user)
 	var/mob/living/simple_animal/hostile/morph/wizard/M = new /mob/living/simple_animal/hostile/morph/wizard(pick(GLOB.xeno_spawn))
 	M.key = C.key
-	M.mind.assigned_role = SPECIAL_ROLE_MORPH
-	M.mind.special_role = SPECIAL_ROLE_MORPH
-	to_chat(M, M.playstyle_string)
-	SSticker.mode.traitors += M.mind
+	M.make_morph_antag(FALSE)
 	var/datum/objective/assassinate/KillDaWiz = new /datum/objective/assassinate
 	KillDaWiz.owner = M.mind
 	KillDaWiz.target = user.mind
@@ -285,4 +282,3 @@
 	M.mind.objectives += KillDaCrew
 	to_chat(M, "<B>Objective #[1]</B>: [KillDaWiz.explanation_text]")
 	to_chat(M, "<B>Objective #[2]</B>: [KillDaCrew.explanation_text]")
-	SEND_SOUND(M, sound('sound/magic/mutate.ogg'))

code/modules/clothing/clothing.dm

@@ -285,6 +285,15 @@ BLIND     // can't see anything
 	else
 		return ..()
 
+/**
+ * Tries to turn the sensors off. Returns TRUE if it succeeds
+ */
+/obj/item/clothing/under/proc/turn_sensors_off()
+	if(has_sensor != 1)
+		return FALSE
+	sensor_mode = SUIT_SENSOR_OFF
+	return TRUE
+
 /obj/item/clothing/under/proc/set_sensors(mob/user as mob)
 	var/mob/M = user
 	if(istype(M, /mob/dead/)) return