:wrench: Ignore ground zoom

Works very well for ground, but as a side effect, clouds appear bigger
when moving.

godot/run/levels/level_1.tscn

@@ -11,6 +11,7 @@
 [node name="Level1" type="Node2D"]
 
 [node name="ParallaxBackground" type="ParallaxBackground" parent="."]
+scroll_ignore_camera_zoom = true
 
 [node name="Ground" type="ParallaxLayer" parent="ParallaxBackground"]
 motion_scale = Vector2(0.2, 0.2)