Adds a new config option to disable ambience and white noise (#22064)

* finally... sweet sweet silence...

* well it works

* oops

code/controllers/configuration/sections/general_configuration.dm

@@ -36,6 +36,8 @@
 	var/starlight = TRUE
 	/// Disable lobby music?
 	var/disable_lobby_music = FALSE
+	/// Disable ambient sound and white noise
+	var/disable_ambient_noise = FALSE
 	/// Disable a popup if 2 users are on the same CID?
 	var/disable_cid_warning_popup = FALSE
 	/// Amount of loadout points non-donors should get
@@ -97,6 +99,7 @@
 	CONFIG_LOAD_BOOL(ghost_interaction, data["ghost_interaction"])
 	CONFIG_LOAD_BOOL(starlight, data["starlight"])
 	CONFIG_LOAD_BOOL(disable_lobby_music, data["disable_lobby_music"])
+	CONFIG_LOAD_BOOL(disable_ambient_noise, data["disable_ambient_noise"])
 	CONFIG_LOAD_BOOL(disable_cid_warning_popup, data["disable_cid_warning_popup"])
 	CONFIG_LOAD_BOOL(enable_ooc_emoji, data["enable_ooc_emoji"])
 	CONFIG_LOAD_BOOL(developer_express_start, data["developer_express_start"])

code/controllers/subsystem/SSambience.dm

@@ -1,7 +1,7 @@
 /// The subsystem used to play ambience to users every now and then, makes them real excited.
 SUBSYSTEM_DEF(ambience)
 	name = "Ambience"
-	flags = SS_BACKGROUND | SS_NO_INIT
+	flags = SS_BACKGROUND
 	priority = FIRE_PRIORITY_AMBIENCE
 	runlevels = RUNLEVEL_GAME | RUNLEVEL_POSTGAME
 	wait = 1 SECONDS
@@ -9,6 +9,10 @@ SUBSYSTEM_DEF(ambience)
 	///Assoc list of listening client - next ambience time
 	var/list/ambience_listening_clients = list()
 
+/datum/controller/subsystem/ambience/Initialize()
+	if(GLOB.configuration.general.disable_ambient_noise)
+		flags |= SS_NO_FIRE
+
 /datum/controller/subsystem/ambience/fire(resumed)
 	for(var/C in ambience_listening_clients)
 		var/client/client_iterator = C