Add user guide section for MCF configurations
We lack a section in the NekMesh user guide chapter referring to the MCF file. A list of the possible parameters and their use is necessary. This will also be useful as reference for Nekkloud users.
We lack a section in the NekMesh user guide chapter referring to the MCF file. A list of the possible parameters and their use is necessary. This will also be useful as reference for Nekkloud users.