Adds the Odyssey gamemode. (#18972)

https://forums.aurorastation.org/topic/20198-mission-briefing-auroras-gamemode-revolution

To-do:

- [x] Finish storyteller verbs.
- [x] Storyteller landmarks.
- [x] Proper storyteller spawning. Right now the gamemode system is
happy with just picking one storyteller and no actors.
- [x] Antagonist whitelists code.
- [x] Adding the Storyteller whitelist.
- [x] Mission map loading code.
- [x] Map in a bunch of missions.
- [ ] Storyteller adminhelps.

---------

Co-authored-by: Matt Atlas <liermattia@gmail.com>
Co-authored-by: DreamySkrell <>

code/modules/mob/language/language.dm

@@ -232,7 +232,7 @@
 /mob/abstract/new_player/hear_broadcast(var/datum/language/language, var/mob/speaker, var/speaker_name, var/message)
 	return
 
-/mob/abstract/observer/hear_broadcast(var/datum/language/language, var/mob/speaker, var/speaker_name, var/message)
+/mob/abstract/ghost/hear_broadcast(var/datum/language/language, var/mob/speaker, var/speaker_name, var/message)
 	if(speaker.name == speaker_name || antagHUD)
 		to_chat(src, "[ghost_follow_link(speaker, src)] <i><span class='game say'>[language.name], <span class='name'>[speaker_name]</span> [message]</span></i>")
 	else

code/modules/mob/language/outsider.dm

@@ -126,7 +126,7 @@
 		return
 
 	for(var/mob/player in GLOB.player_list)
-		if(istype(player,/mob/abstract/observer) || check_special_condition(player))
+		if(isobserver(player) || check_special_condition(player))
 			if(!within_jamming_range(player))
 				to_chat(player, msg)
 

code/modules/mob/language/station.dm

@@ -256,7 +256,7 @@
 	for(var/mob/player in GLOB.player_list)
 		if(player == speaker)
 			to_chat(player, msg)
-		else if(isobserver(player))
+		else if(isghost(player))
 			to_chat(player, "[ghost_follow_link(speaker, player)] [msg]")
 		else if(!within_jamming_range(player) && check_special_condition(player))
 			if(speaker_encryption_key)