Adds sounds for sleepers (#20964)

code/game/machinery/Sleeper.dm

@@ -426,6 +426,7 @@
 		return
 	occupant.forceMove(loc)
 	occupant = null
+	playsound(src, 'sound/machines/podopen.ogg', 5)
 	update_icon(UPDATE_ICON_STATE)
 	// eject trash the occupant dropped
 	for(var/atom/movable/A in contents - component_parts - list(beaker))
@@ -496,6 +497,7 @@
 			return
 		L.forceMove(src)
 		occupant = L
+		playsound(src, 'sound/machines/podclose.ogg', 5)
 		update_icon(UPDATE_ICON_STATE)
 		to_chat(L, "<span class='boldnotice'>You feel cool air surround you. You go numb as your senses turn inward.</span>")
 		add_fingerprint(user)
@@ -567,6 +569,7 @@
 		usr.stop_pulling()
 		usr.forceMove(src)
 		occupant = usr
+		playsound(src, 'sound/machines/podclose.ogg', 5)
 		update_icon(UPDATE_ICON_STATE)
 
 		for(var/obj/O in src)

code/game/machinery/adv_med.dm

@@ -76,6 +76,7 @@
 			return
 		M.forceMove(src)
 		occupant = M
+		playsound(src, 'sound/machines/podclose.ogg', 5)
 		update_icon(UPDATE_ICON_STATE)
 		add_fingerprint(user)
 		qdel(TYPECAST_YOUR_SHIT)
@@ -138,6 +139,7 @@
 
 	H.forceMove(src)
 	occupant = H
+	playsound(src, 'sound/machines/podclose.ogg', 5)
 	update_icon(UPDATE_ICON_STATE)
 	add_fingerprint(user)
 	SStgui.update_uis(src)
@@ -183,6 +185,7 @@
 		return
 	occupant.forceMove(loc)
 	occupant = null
+	playsound(src, 'sound/machines/podopen.ogg', 5)
 	update_icon(UPDATE_ICON_STATE)
 	// eject trash the occupant dropped
 	for(var/atom/movable/A in contents - component_parts)

code/game/machinery/cryopod.dm

@@ -584,7 +584,7 @@
 	log_admin("<span class='notice'>[key_name(E)] entered a stasis pod.</span>")
 	message_admins("[key_name_admin(E)] entered a stasis pod. (<A HREF='?_src_=holder;adminplayerobservecoodjump=1;X=[x];Y=[y];Z=[z]'>JMP</a>)")
 	add_fingerprint(E)
-
+	playsound(src, 'sound/machines/podclose.ogg', 5)
 
 /obj/machinery/cryopod/verb/eject()
 	set name = "Eject Pod"
@@ -665,6 +665,7 @@
 	occupant = null
 	icon_state = base_icon_state
 	name = initial(name)
+	playsound(src, 'sound/machines/podopen.ogg', 5)
 
 	return