Add option to select instance culling and LOD in Glyph3D representation
This MR adds option to Glyphs3D representation to enable culling and LOD configuration.
vtk/vtk!3767 (merged) is required.
Note that this MR also fixes the ShowComponentLabels
hint feature that was broken and extend it to show label as table headers when provided.
Edited by Joachim Pouderoux