Field of Vision component. (#12075)

* Hopeless WIP for vision cones.

* Core component and hooks done

* Removing clutter.

* linter bashing me for using statements as args.

* Ok.

* continue

* bring back the macro

* Configs and openspace filter.

* Chat plane, reset perspective signal, mechs/vehicles cases, machineries.

* view, viewers and spoopy ghosts.

* Renamed component, admin fun button and snowflakes robots.

* Whoopsie.

* Yikes

* test merge tweak.

* radial yaketi sax.

* Fixed tgui UIs, some messages not displayed to the target.

* Documentation and a little bugfix.

* Pulling QoL, seventh plane made in this PR.

* Fix.

* Tweaks and improvements.

* Update randomverbs.dm

code/game/objects/objs.dm

@@ -123,7 +123,7 @@
 /obj/proc/updateUsrDialog()
 	if((obj_flags & IN_USE) && !(obj_flags & USES_TGUI))
 		var/is_in_use = FALSE
-		var/list/nearby = viewers(1, src)
+		var/list/nearby = get_actual_viewers(1, src)
 		for(var/mob/M in nearby)
 			if ((M.client && M.machine == src))
 				is_in_use = TRUE
@@ -152,7 +152,7 @@
 	if(obj_flags & IN_USE)
 		var/is_in_use = FALSE
 		if(update_viewers)
-			for(var/mob/M in viewers(1, src))
+			for(var/mob/M in get_actual_viewers(1, src))
 				if ((M.client && M.machine == src))
 					is_in_use = TRUE
 					src.interact(M)