Add constructable floor lights + mapping subtypes (#93537)

## About The Pull Request
Features:
- Floor lights can be constructed using a small light fixture on the
turf you are standing on
- Floor light construction sprites
- `/burned` subtypes for lights
- Convert `/build` subtypes to `/empty` subtypes with `UpdatePaths`
script

## Why It's Good For The Game
Floor lights can now be constructed in game using the same mechanics as
other lights. The `/burned` and `/empty` subtypes might be useful for
mapping.

## Changelog
🆑
add: Add constructable floor lights by using a small light fixture on
the floor. They are constructed the same way as other lights.
qol: Add `/burned` subtype to `/obj/machinery/light` for mapping
shenanigans
image: Add floor light construction sprites
map: Converted the `/built` subtype for `/obj/machinery/light` to be
`/empty` and added an UpdatePaths script.
/🆑

---------

Co-authored-by: SyncIt21 <110812394+SyncIt21@users.noreply.github.com>

code/modules/power/lighting/light.dm

@@ -424,6 +424,8 @@
 			frame = new /obj/item/wallframe/light_fixture(drop_point)
 		if("bulb")
 			frame = new /obj/item/wallframe/light_fixture/small(drop_point)
+		if("floor bulb")
+			frame = new /obj/item/wallframe/light_fixture/small(drop_point)
 	if(!disassembled)
 		frame.take_damage(frame.max_integrity * 0.5, sound_effect = FALSE)
 		if(status != LIGHT_BROKEN)
@@ -728,7 +730,7 @@
 	layer = BELOW_CATWALK_LAYER
 	plane = FLOOR_PLANE
 	light_type = /obj/item/light/bulb
-	fitting = "bulb"
+	fitting = "floor bulb"
 	nightshift_brightness = 4
 	fire_brightness = 4.5
 
@@ -739,6 +741,15 @@
 	status = LIGHT_BROKEN
 	icon_state = "floor-broken"
 
+/obj/machinery/light/floor/burned
+	status = LIGHT_BURNED
+	icon_state = "floor-burned"
+
+/obj/machinery/light/floor/empty
+	icon_state = "floor-empty"
+	start_with_cell = FALSE
+	status = LIGHT_EMPTY
+
 /obj/machinery/light/floor/transport
 	name = "transport light"
 	break_if_moved = FALSE