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/modules/mob/living/brain/brain.dm

@@ -4,6 +4,7 @@
 	var/emp_damage = 0//Handles a type of MMI damage
 	var/datum/dna/stored/stored_dna // dna var for brain. Used to store dna, brain dna is not considered like actual dna, brain.has_dna() returns FALSE.
 	stat = DEAD //we start dead by default
+	has_field_of_vision = FALSE //Not really worth it.
 	see_invisible = SEE_INVISIBLE_LIVING
 	possible_a_intents = list(INTENT_HELP, INTENT_HARM) //for mechas
 	speech_span = SPAN_ROBOT