Axis scale factor

As written up on Discourse, we need to add the ability to independently scale axes. Users will generally scale the Z axis, but lets make it more generic. This is different than the transform filter scale, where the data in some axis is changed. An example of this feature would be an oil field that has X and Y of 20 miles and Z of .5 miles. Visualizing this would make it look like a 2d slice, where you want to see a 3d cube. Transform filter doesn't work, as a cube axis would then lie about the depth of the oil field. Please add this control to the Properties tab, somewhere around Cube Axis. Make this feature sticky (as users will probably be using it over and over on similar data). Optionally print "Z Axis: 10X" for the example of the Z axis being expanded 10X, lower right below the Orientation Axis, default on.

https://discourse.paraview.org/t/axis-scale-factor-or-vertical-exaggeration-of-z-axis/4808