add gamepad support to menus

scenes/ui/components/ValueStepper.tscn

@@ -0,0 +1,26 @@
+[gd_scene load_steps=2 format=3 uid="uid://cb6k05r8t7l4l"]
+
+[ext_resource type="Script" path="res://scenes/ui/components/ValueStepper.gd" id="1_value_stepper"]
+
+[node name="ValueStepper" type="HBoxContainer"]
+layout_mode = 2
+size_flags_vertical = 4
+script = ExtResource("1_value_stepper")
+
+[node name="LeftButton" type="Button" parent="."]
+layout_mode = 2
+text = "<"
+
+[node name="ValueDisplay" type="Label" parent="."]
+custom_minimum_size = Vector2(100, 0)
+layout_mode = 2
+size_flags_horizontal = 4
+text = "Value"
+horizontal_alignment = 1
+
+[node name="RightButton" type="Button" parent="."]
+layout_mode = 2
+text = ">"
+
+[connection signal="pressed" from="LeftButton" to="." method="_on_left_button_pressed"]
+[connection signal="pressed" from="RightButton" to="." method="_on_right_button_pressed"]