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/items/implants/implantpad.dm

@@ -66,7 +66,7 @@
 		if(ismob(loc))
 			attack_self(loc)
 		else
-			for(var/mob/M in viewers(1, src))
+			for(var/mob/M in get_actual_viewers(1, src))
 				if(M.client)
 					attack_self(M)
 		add_fingerprint(usr)