Adds world parameter to change the config directory (#39073)

code/__DEFINES/misc.dm

@@ -440,6 +440,8 @@ GLOBAL_LIST_INIT(pda_styles, list(MONO, VT, ORBITRON, SHARE))
 #define OVERRIDE_LOG_DIRECTORY_PARAMETER "log-directory"
 //Prevent the master controller from starting automatically, overrides TEST_RUN_PARAMETER
 #define NO_INIT_PARAMETER "no-init"
+//Force the config directory to be something other than "config"
+#define OVERRIDE_CONFIG_DIRECTORY_PARAMETER "config-directory"
 
 #define EGG_LAYING_MESSAGES list("lays an egg.","squats down and croons.","begins making a huge racket.","begins clucking raucously.")
 

code/controllers/configuration/configuration.dm

@@ -20,7 +20,9 @@
 
 	var/motd
 
-/datum/controller/configuration/proc/Load()
+/datum/controller/configuration/proc/Load(directory)
+	if(directory)
+		src.directory = directory
 	if(entries)
 		CRASH("[THIS_PROC_TYPE_WEIRD] called more than once!")
 	InitEntries()

code/game/world.dm

@@ -21,7 +21,7 @@ GLOBAL_PROTECT(security_mode)
 
 	GLOB.revdata = new
 
-	config.Load()
+	config.Load(params[OVERRIDE_CONFIG_DIRECTORY_PARAMETER])
 
 	//SetupLogs depends on the RoundID, so lets check
 	//DB schema and set RoundID if we can