Adding new test images and addingvtkScalarBarWidget to CurvaturesAdjustedges

There is a slight visual difference between the original
 and final colormap, however testing does not detect it.

See: paraview/paraview#22392

ColorMapToLUT_JSON now reads JSON files with multiple color maps.

this addresses #308

1) Command line arguments simplified.
2) Indexing to allow tracing back to original data points.
3) We now drop rows with nan in them.
4) Enabling the vtkCameraOrientationWidget.

1) Adding "Track" for Track Name.
2) Adding "nan" for missing numeric data.