Moves GLOB.movement_keys into SSinput and adds movement direction badminry (#34123)

* badmin flip dirs

* moves movement_keys into SSinput from GLOB

code/controllers/subsystem/input.dm

@@ -7,10 +7,13 @@ SUBSYSTEM_DEF(input)
 	runlevels = RUNLEVELS_DEFAULT | RUNLEVEL_LOBBY
 
 	var/list/macro_sets
+	var/list/movement_keys
 
 /datum/controller/subsystem/input/Initialize()
 	setup_default_macro_sets()
 
+	setup_default_movement_keys()
+
 	initialized = TRUE
 
 	refresh_client_macro_sets()
@@ -89,6 +92,15 @@ SUBSYSTEM_DEF(input)
 
 	macro_sets = default_macro_sets
 
+// For initially setting up or resetting to default the movement keys
+/datum/controller/subsystem/input/proc/setup_default_movement_keys()
+	var/static/list/default_movement_keys = list(
+		"W" = NORTH, "A" = WEST, "S" = SOUTH, "D" = EAST,				// WASD
+		"North" = NORTH, "West" = WEST, "South" = SOUTH, "East" = EAST,	// Arrow keys & Numpad
+		)
+
+	movement_keys = default_movement_keys.Copy()
+
 // Badmins just wanna have fun ♪
 /datum/controller/subsystem/input/proc/refresh_client_macro_sets()
 	var/list/clients = GLOB.clients