Add option to select which arrays to save with CGNSWriter (in gui and python)
When writing data to vtm, it is possible to select which array to write, both in the gui and through python (ChooseArraysToWrite=1 in combination with e.g. CellDataArrays=[...]). It would be nice to also have this option when writing to CGNS. When writing multiple cgns files, this saves defining several PassArray filters.