Add ability to label contour surfaces and lines
Please add the ability to label contours.
This is evidentally already in VTK, as per https://vtk.org/Wiki/VTK/Examples/Cxx/Visualization/LabelContours.
It is a very popular uservoice request: https://paraview.uservoice.com/forums/11350-general/suggestions/1350851-create-the-ability-to-automatically-label-contour
An example of what is requested is on discource, here: https://discourse.paraview.org/t/is-it-possible-to-add-labels-to-contour-lines/1466
This bug is not the same as, but a sibling of #15810 (closed).
It is fine to push this to 5.9, spring 2020.