Adds message boxes to the chat system (#22280)

* initial working commit

* fix this

* helpers

* tweaks

* text being silly moment

* antags are red

* Update goon/browserassets/css/browserOutput-dark.css

Co-authored-by: Burzah <116982774+Burzah@users.noreply.github.com>

* Update code/modules/mob/living/carbon/brain/robotic_brain.dm

Co-authored-by: Luc <89928798+lewcc@users.noreply.github.com>

* review and warning fixes

* refactor antag greetings

* tweaks to include more things

* Apply suggestions from code review

Co-authored-by: Burzah <116982774+Burzah@users.noreply.github.com>

* Update code/modules/antagonists/traitor/datum_mindslave.dm

Co-authored-by: Burzah <116982774+Burzah@users.noreply.github.com>

* fixes vial spawned antags

* Update code/datums/mind.dm

Co-authored-by: Contrabang <91113370+Contrabang@users.noreply.github.com>

---------

Co-authored-by: Burzah <116982774+Burzah@users.noreply.github.com>
Co-authored-by: Luc <89928798+lewcc@users.noreply.github.com>
Co-authored-by: Contrabang <91113370+Contrabang@users.noreply.github.com>

code/modules/reagents/chemistry/reagents/paradise_pop.dm

@@ -81,7 +81,7 @@
 
 /datum/reagent/consumable/drink/berry_banned2/on_mob_death(mob/living/M)
 	SEND_SOUND(M, sound('sound/effects/adminhelp.ogg', 0, 1, 0, 25))
-	to_chat(M, "<span class='adminhelp'>PM from-<b>Administrator</b>: BWOINK!</span>")
+	to_chat(M, chat_box_red("<span class='adminhelp'>PM from-<b>Administrator</b>: BWOINK!</span>"))
 	..()
 
 //Blackeye Brew: Chance to make the drinker say greytider-themed things like "I thought clown was valid!"