Added a ruins UT (#18290)

* sdfa

* fas

* the godness guides, the godness protects

* sadf

* sdf

* fsa

* exoplanets_ruins config for UT

* sdaf

* sdf

* curse upon me

code/modules/maps/map_template.dm

@@ -41,6 +41,8 @@
 	return bounds
 
 /datum/map_template/proc/load_new_z(var/no_changeturf = TRUE)
+	RETURN_TYPE(/turf)
+
 	var/x = round((world.maxx - width)/2)
 	var/y = round((world.maxy - height)/2)
 	var/initial_z = world.maxz + 1