The Great Device Resprite and Contained Sprite-ening (#20344)

Don't let the large file size scare you, it's just mostly splitting
stuff into contained sprites and putting them in the correct place.

Anyway, resprites most non-resprited devices in devices.dmi, and puts
them in contained sprites.
Also puts any related /obj/item/device into contained sprites too.
That's basically the long and short of it.

code/game/objects/items/devices/flash.dm

@@ -2,6 +2,7 @@
 	name = "flash"
 	desc = "A security device capable of producing a blinding, incapacitating flash at close ranges. Repeated use may result in a burnt-out bulb and/or excessive force investigations."
 	desc_info = "Click on someone adjacent to you to attempt to blind them. Use it in your hand with HARM intent, or on yourself, to blind everyone in a small radius (including yourself!)"
+	icon = 'icons/obj/item/device/flash.dmi'
 	icon_state = "flash"
 	item_state = "flash"
 	throwforce = 5