[Ready] Added animations to cryo/sleepers opening/closing (#42289)

* Added animations to cryo/sleepers opening/closing

Also changed a bit of internal handling of icons of cryo
Images -> mutable appearances
No more updating icons every click on anything in the ui

* Back to images

* Actually fixes images

* Use of flick and animation sprites

Changed the way animations are done to use flick proc instead of animate
proc
Changed the way animations of cryo cells are organazed in a dmi, now
separate icon_state for opening and closing

* Support for resprites of the cryo subtypes

Support for resprites of the cryo subtypes

code/modules/atmospherics/machinery/components/unary_devices/cryo.dm

@@ -89,6 +89,7 @@
 		beaker = null
 
 /obj/machinery/atmospherics/components/unary/cryo_cell/update_icon()
+
 	cut_overlays()
 
 	if(panel_open)
@@ -248,17 +249,18 @@
 /obj/machinery/atmospherics/components/unary/cryo_cell/open_machine(drop = FALSE)
 	if(!state_open && !panel_open)
 		on = FALSE
-		..()
 	for(var/mob/M in contents) //only drop mobs
 		M.forceMove(get_turf(src))
 		if(isliving(M))
 			var/mob/living/L = M
 			L.update_mobility()
 	occupant = null
-	update_icon()
+	flick("pod-open-anim", src)
+	..()
 
 /obj/machinery/atmospherics/components/unary/cryo_cell/close_machine(mob/living/carbon/user)
 	if((isnull(user) || istype(user)) && state_open && !panel_open)
+		flick("pod-close-anim", src)
 		..(user)
 		return occupant
 
@@ -389,6 +391,7 @@
 				on = FALSE
 			else if(!state_open)
 				on = TRUE
+			update_icon()
 			. = TRUE
 		if("door")
 			if(state_open)
@@ -406,7 +409,6 @@
 					usr.put_in_hands(beaker)
 				beaker = null
 				. = TRUE
-	update_icon()
 
 /obj/machinery/atmospherics/components/unary/cryo_cell/update_remote_sight(mob/living/user)
 	return // we don't see the pipe network while inside cryo.