Ports Goonchat from Baystation. (#9635)

changes:

    rscadd: "Ported a new chat system, Goonchat, that allows for cool things like changing font style, size, spacing, highlighting up to 5 strings in the chat, and DARK MODE."
    rscadd: "Repeated chat messages can now get compacted. You can disable this in goonchat settings."
    rscadd: "You can change icon style to any font on your system."
    tweak: "The game window has been altered a bit to adjust for this."
    rscdel: "Removed skin style prefs as they are no longer used."

code/modules/modular_computers/file_system/programs/pai/signaler.dm

@@ -51,7 +51,7 @@
 	if(href_list["send"])
 		host.sradio.send_signal("ACTIVATE")
 		for(var/mob/O in hearers(1, host.loc))
-			O.show_message(text("\icon[] *beep* *beep*", host), 3, "*beep* *beep*", 2)
+			O.show_message(text("[icon2html(host, viewers(get_turf(src)))] *beep* *beep*"), 3, "*beep* *beep*", 2)
 		return 1
 
 	else if(href_list["freq"])