Deadchat Plays SS13: Ghost Control of Mobs (#20600)

* Add dchat control

* adds human support, cleans other things up

* Bit of cleanup

* actually use the item

* minor proc ref mistake, laugh at this user

* evil tg strings

* Renames defines, adds vv menu item for it

* Improve anarchy message formatting

* don't go to_chatting tesla energy balls

* aa review

* Minor cleanups, replace some emotes

* Addressing some reviews

* Incorporate some checks for deadchat mutes/prefs

code/modules/client/client_procs.dm

@@ -216,6 +216,8 @@
 
 	if(GLOB.configuration.general.enable_auto_mute && !check_rights(R_ADMIN, 0) && last_message == message)
 		last_message_count++
+		if(SEND_SIGNAL(mob, COMSIG_MOB_AUTOMUTE_CHECK, src, last_message, mute_type) & WAIVE_AUTOMUTE_CHECK)
+			return FALSE
 		if(last_message_count >= SPAM_TRIGGER_AUTOMUTE)
 			to_chat(src, "<span class='danger'>You have exceeded the spam filter limit for identical messages. An auto-mute was applied.</span>")
 			cmd_admin_mute(mob, mute_type, 1)