/Icon/ Folder cleansing crusade part, I think 4; post-wallening clean-up. (#85823)

Hello everybuddy, your number three rated coder-failure here to clean up
some mess. This PR accomplishes some of the more major structural clean
up changes I wanted to do with /obj/ folder, but decided to wait on
until wallening gets merged, and so, time has come. Several things to
still be done, although I know these cleaning PR's are quite a load, so
will wait for this one to get done with first.

## Why It's Good For The Game
Saner spriters, better sprites, less annoyance. Also deleted a whole
load of redundancy this time around, a lot of sprites which existed
simultaniously in two places now got exit their quantum superposition.

code/game/objects/structures/construction_console/construction_console.dm

@@ -99,7 +99,7 @@
 	name = "construction holo-drone"
 	//Allows any curious crew to watch the base after it leaves. (This is safe as the base cannot be modified once it leaves)
 	move_on_shuttle = TRUE
-	icon = 'icons/obj/mining.dmi'
+	icon = 'icons/obj/mining_zones/equipment.dmi'
 	icon_state = "construction_drone"
 	invisibility = INVISIBILITY_MAXIMUM
 	///Reference to the camera console controlling this drone