Explodes device.dmi (#80025)

## About The Pull Request

I woke up today and thought 'what would be easy thing to do today so I
can say I've done something?'. Then I remembered I saw several gangtool
usages the time I split radio up, and I could remedy those. 7 hours
later, device.dmi is split in a folder of its own, and I've also given
unique sprites to door remotes and landing desginators.


## Why It's Good For The Game

The device.dmi was kind of a mess.

## Changelog

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/🆑

code/game/objects/structures/spawner.dm

@@ -74,7 +74,7 @@
 
 /obj/structure/spawner/syndicate
 	name = "warp beacon"
-	icon = 'icons/obj/device.dmi'
+	icon = 'icons/obj/machines/beacon.dmi'
 	icon_state = "syndbeacon"
 	spawn_text = "warps in from"
 	mob_types = list(/mob/living/basic/trooper/syndicate/ranged)
@@ -100,7 +100,7 @@
 	name = "Laughing Larry"
 	desc = "A laughing, jovial figure. Something seems stuck in his throat."
 	icon_state = "clownbeacon"
-	icon = 'icons/obj/device.dmi'
+	icon = 'icons/obj/machines/beacon.dmi'
 	max_integrity = 200
 	max_mobs = 15
 	spawn_time = 15 SECONDS