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/structures/guillotine.dm

@@ -130,7 +130,7 @@
 			// The crowd is pleased
 			// The delay is to making large crowds have a longer laster applause
 			var/delay_offset = 0
-			for(var/mob/M in viewers(src, 7))
+			for(var/mob/M in get_actual_viewers(world.view, src))
 				var/mob/living/carbon/human/C = M
 				if (ishuman(M))
 					addtimer(CALLBACK(C, /mob/.proc/emote, "clap"), delay_offset * 0.3)