Ports the weather system from Nebula. (#18706)

* part 1

* compiles?

* IT WORKS

* vis contents

* fixes

* umbrelloid

* umbrella 2

* dsasdd

* stuff

* lmao

---------

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

code/game/objects/structures/crates_lockers/closets.dm

@@ -608,7 +608,7 @@
 
 /obj/structure/closet/proc/end_door_animation()
 	is_animating_door = FALSE // comment this out and the line below to manually tweak the animation end state by fiddling with the door_anim vars to match the open door icon
-	vis_contents -= door_obj
+	remove_vis_contents(door_obj)
 	update_icon()
 	compile_overlays(src)
 
@@ -639,7 +639,7 @@
 
 /obj/structure/closet/proc/end_door_animation_alt()
 	is_animating_door = FALSE // comment this out and the line below to manually tweak the animation end state by fiddling with the door_anim vars to match the open door icon
-	vis_contents -= door_obj_alt
+	remove_vis_contents(door_obj_alt)
 	update_icon()
 	compile_overlays(src)
 

code/game/objects/structures/mirror.dm

@@ -148,7 +148,7 @@
 	for(var/mob/living/carbon/human/H in loc)
 		check_vampire_enter(H.loc, H)
 
-	vis_contents += get_turf(mirror)
+	add_vis_contents(get_turf(mirror))
 
 /obj/effect/reflection/proc/check_vampire_enter(var/turf/T, var/mob/living/carbon/human/H)
 	if(!istype(H))

code/game/objects/structures/stool_bed_chair_nest/bed.dm

@@ -415,7 +415,7 @@
 			add_overlay(light)
 	if(vitals)
 		vitals.update_monitor()
-		vis_contents += vitals
+		add_vis_contents(vitals)
 
 /obj/structure/bed/roller/attackby(obj/item/attacking_item, mob/user)
 	if(iswrench(attacking_item) || istype(attacking_item, /obj/item/stack) || iswirecutter(attacking_item))