Game info verb for ghosts (#11935)

* Some ghost QoL stuff

* DNR/observer only

code/modules/mob/dead/observer/observer.dm

@@ -937,3 +937,20 @@ This is the proc mobs get to turn into a ghost. Forked from ghostize due to comp
 		spawners_menu = new(src)
 
 	spawners_menu.ui_interact(src)
+
+/mob/dead/observer/verb/game_info()
+	set name = "Game info"
+	set desc = "Shows various info relating to the game mode, antagonists etc."
+	set category = "Ghost"
+	if(!started_as_observer && can_reenter_corpse)
+		to_chat(src, "You cannot see this info unless you are an observer or you've chosen Do Not Resuscitate!")
+		return
+	var/list/stuff = list("[SSticker.mode.name]")
+	stuff += "Antagonists:\n"
+	for(var/datum/antagonist/A in GLOB.antagonists)
+		if(A.owner)
+			stuff += "[A.owner] the [A.name]"
+	var/ghost_info = SSticker.mode.ghost_info()
+	if(ghost_info)
+		stuff += ghost_info
+	to_chat(src,stuff.Join("\n"))