ScaleGizmo allows scaling in the direction of local or global axes,
as well as uniform scaling. Any scale component cannot be made
negative with ScaleGizmo.
Change-Id: I9b98d9593e07ded340178b07b73fa1b72421ba20
Fixes: QDS-1195
Reviewed-by: Thomas Hartmann <thomas.hartmann@qt.io>
Reviewed-by: Mahmoud Badri <mahmoud.badri@qt.io>
