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/game/objects/structures/crates_lockers/closets.dm

@@ -136,7 +136,7 @@
 				content_size += Ceiling(I.w_class/2)
 		. += content_info(user, content_size)
 
-	if(!src.opened && isobserver(user))
+	if(!src.opened && isghost(user))
 		. += "It contains: [counting_english_list(contents)]"
 
 	if(src.opened && linked_teleporter && is_adjacent)

code/game/objects/structures/inflatable.dm

@@ -167,7 +167,7 @@
 	set category = "Object"
 	set src in oview(1)
 
-	if(isobserver(usr) || usr.restrained() || !usr.Adjacent(src))
+	if(isghost(usr) || usr.restrained() || !usr.Adjacent(src))
 		return
 
 	verbs -= /obj/structure/inflatable/verb/hand_deflate