AxisScaleGizmo API: provide drag strength sensitivity scalar

In the code for the AxisScaleGizmo, there’s no way to provide an additional, custom dragStrength sensitivity. The only way to change dragStrength is modifying the scaleRatio of the gizmo itself. It would be nice to add an optional multiplier for fine or rough scale adjustments.

Code reference here:

Invoking the gizmo overlord @Cedric

PR is made :

And doc is here

And you rock!

thanks a ton!