Add medical HUD icon if the body has died recently enough to be defibbed (#38909)

Health analyzers already will tell you this, so this just makes it easier. I
read this on the "Minor Suggestions" thread. I'm no spriter, so feel free to
tell me if my icon sucks. I had to add an "addtimer" to the death proc because
med_hud_set_status isn't called anymore after death.

code/game/data_huds.dm

@@ -175,6 +175,11 @@
 	if(has_trait(TRAIT_XENO_HOST))
 		holder.icon_state = "hudxeno"
 	else if(stat == DEAD || (has_trait(TRAIT_FAKEDEATH)))
+		if(tod)
+			var/tdelta = round(world.time - timeofdeath)
+			if(tdelta < (DEFIB_TIME_LIMIT * 10))
+				holder.icon_state = "huddefib"
+				return
 		holder.icon_state = "huddead"
 	else
 		switch(virus_threat)

code/modules/mob/living/death.dm

@@ -74,6 +74,7 @@
 	update_canmove()
 	med_hud_set_health()
 	med_hud_set_status()
+	addtimer(CALLBACK(src, .proc/med_hud_set_status), (DEFIB_TIME_LIMIT * 10) + 1)
 	stop_pulling()
 
 	if (client)