Unified Ghost Hole (#18608)

* unified hole

* unified hole grammar pass, event replacement, and redgate variant

* unified hole grammar pass, event replacement, and redgate variant

* unified ghost hole

* unified ghost hole

* unified ghost holes

* Update vorestation.dme

* Update unified_ghost_hole.dm

corrected logging

* Update unified_ghost_hole.dm

aaaaa typo. also some general message phrasing tweaks.

* Update unified_ghost_hole.dm

---------

Co-authored-by: Cameron Lennox <killer65311@gmail.com>

code/modules/events/maint_spawner.dm

@@ -0,0 +1,22 @@
+/datum/event/maintenance_critter
+	startWhen = 1
+	endWhen = 30
+
+/datum/event/maintenance_critter/start()
+
+	var/obj/effect/landmark/spawnspot = null
+	var/list/possibleSpawnspots = list()
+	for(var/obj/effect/landmark/L in GLOB.landmarks_list)
+		if(L.name == "maint_pred")
+			possibleSpawnspots += L
+	if(possibleSpawnspots.len)
+		spawnspot = pick(possibleSpawnspots)
+	else
+		kill()		// To prevent fake announcements
+		return
+
+	if(!spawnspot)
+		kill()		// To prevent fake announcements
+		return
+
+	new /obj/structure/ghost_pod/ghost_activated/unified_hole(get_turf(spawnspot))