feat: implement pause menu system with loadout and settings configuration management

ui/pause_menu.gd

@@ -37,6 +37,7 @@ var _resolution_opt: OptionButton
 var _fps_slider: HSlider
 var _fps_input: LineEdit
 var _show_fps_checkbox: CheckButton
+var _show_movement_speed_checkbox: CheckButton
 var _vol_master_slider: HSlider
 var _vol_master_input: LineEdit
 var _vol_sfx_slider: HSlider
@@ -622,6 +623,15 @@ func _build_ui() -> void:
 	)
 	advanced_tab.add_child(_show_fps_checkbox)
 	
+	_show_movement_speed_checkbox = CheckButton.new()
+	_show_movement_speed_checkbox.text = "Show Movement Speed Indicator"
+	_show_movement_speed_checkbox.button_pressed = SettingsManager.show_movement_speed
+	_show_movement_speed_checkbox.toggled.connect(func(toggled_on: bool):
+		SettingsManager.show_movement_speed = toggled_on
+		SettingsManager._save_settings()
+	)
+	advanced_tab.add_child(_show_movement_speed_checkbox)
+	
 	var spacer_adv = Control.new()
 	spacer_adv.size_flags_vertical = Control.SIZE_EXPAND_FILL
 	advanced_tab.add_child(spacer_adv)
@@ -633,6 +643,8 @@ func _build_ui() -> void:
 		SettingsManager.show_debug_ui = false
 		_show_fps_checkbox.button_pressed = false
 		SettingsManager.show_fps = false
+		_show_movement_speed_checkbox.button_pressed = false
+		SettingsManager.show_movement_speed = false
 		SettingsManager._save_settings()
 	)
 	advanced_tab.add_child(reset_adv_btn)
@@ -784,6 +796,8 @@ func _show_settings() -> void:
 		_debug_ui_checkbox.button_pressed = SettingsManager.show_debug_ui
 	if _show_fps_checkbox:
 		_show_fps_checkbox.button_pressed = SettingsManager.show_fps
+	if _show_movement_speed_checkbox:
+		_show_movement_speed_checkbox.button_pressed = SettingsManager.show_movement_speed
 	if _world_fov_slider:
 		_world_fov_slider.value = SettingsManager.world_fov
 		_world_fov_input.text = str(round(SettingsManager.world_fov))