sorts file helpers; add directory walk helpers (#4703)

Co-authored-by: VM_USER <VM_USER>

code/controllers/subsystem/mapping/_mapping.dm

@@ -29,10 +29,6 @@ SUBSYSTEM_DEF(mapping)
 	/// Cached map name for statpanel
 	var/static/stat_map_name = "Loading..."
 
-	// Obfuscation Module
-	/// "secret" key
-	var/obfuscation_secret
-
 //dlete dis once #39770 is resolved
 /datum/controller/subsystem/mapping/proc/HACK_LoadMapConfig()
 	if(!config)

code/controllers/subsystem/mapping/obfuscation.dm

@@ -3,6 +3,10 @@
  *
  * Allows for generating arbitrary obfuscation IDs from static mapload time IDs, that are deterministic within a round.
  */
+/datum/controller/subsystem/mapping
+	/// "secret" key
+	var/obfuscation_secret
+
 /datum/controller/subsystem/mapping/PreInit()
 	. = ..()
 	if(!obfuscation_secret)