Replaces our lighting system with CM's. (#21465)

Depends on #21458.

Ports https://github.com/cmss13-devs/cmss13/pull/4229, with the original
authors as:

- https://github.com/tgstation/TerraGov-Marine-Corps/pull/1964 for the
lighting controller (A-lexa)
- https://github.com/tgstation/TerraGov-Marine-Corps/pull/4747 and
https://github.com/tgstation/TerraGov-Marine-Corps/pull/7263 for the
lighting (TiviPlus)
- https://github.com/tgstation/tgstation/pull/54520 for the dir lighting
component
- https://github.com/tgstation/tgstation/pull/75018 for the out of
bounds fix in lighting
- https://github.com/tgstation/TerraGov-Marine-Corps/pull/6678 for the
emissives (TiviPlus)

The main driving reason behind this is that current lighting consumes
way too much processing power, especially for things like odysseys/away
sites where a billion light sources are processing/moving at once and
the game slows down to a crawl. Hopefully this improves the situation by
a good margin, but we will need some testmerging to confirm that.
<img width="1349" height="1349" alt="image"
src="https://github.com/user-attachments/assets/1059ba2b-c0c5-495a-9c76-2d75d0c42bf2"
/>
<img width="1349" height="1349" alt="image"
src="https://github.com/user-attachments/assets/9704b0f6-4cf6-4dfd-a6cb-5702ad07d677"
/>


- [x] Resolve todos
- [x] Look into open space fuckery (border objects)

---------

Co-authored-by: Matt Atlas <liermattia@gmail.com>
Co-authored-by: JohnWildkins <john.wildkins@gmail.com>

code/datums/elements/light_blocking.dm

@@ -0,0 +1,43 @@
+/**
+ * Attached to movable atoms with opacity. Listens to them move and updates their old and new turf loc's opacity accordingly.
+ */
+/datum/element/light_blocking
+	element_flags = ELEMENT_DETACH_ON_HOST_DESTROY
+
+
+/datum/element/light_blocking/Attach(datum/target)
+	. = ..()
+	if(!ismovable(target))
+		return ELEMENT_INCOMPATIBLE
+	RegisterSignal(target, COMSIG_MOVABLE_MOVED, PROC_REF(on_target_move))
+	var/atom/movable/movable_target = target
+	if(!isturf(movable_target.loc))
+		return
+	for(var/turf/turf_loc as anything in movable_target.locs)
+		turf_loc.add_opacity_source(target)
+
+
+/datum/element/light_blocking/Detach(datum/target)
+	. = ..()
+	UnregisterSignal(target, list(COMSIG_MOVABLE_MOVED))
+	var/atom/movable/movable_target = target
+	if(!isturf(movable_target.loc))
+		return
+	for(var/turf/turf_loc as anything in movable_target.locs)
+		turf_loc.remove_opacity_source(target)
+
+
+///Updates old and new turf loc opacities.
+///Updates old and new turf loc opacities.
+/datum/element/light_blocking/proc/on_target_move(atom/movable/source, atom/old_loc, dir, forced, list/old_locs)
+	SIGNAL_HANDLER
+	if(isturf(old_loc))
+		if(old_locs)
+			for(var/turf/old_turf as anything in old_locs)
+				old_turf.remove_opacity_source(source)
+		else
+			var/turf/old_turf = old_loc
+			old_turf.remove_opacity_source(source)
+	if(isturf(source.loc))
+		for(var/turf/new_turf as anything in source.locs)
+			new_turf.add_opacity_source(source)