k-meshes and electronic simulations

I realized most of the electronic parsers do not store k-meshes (feel free to correct me if I am wrong, but I only checked a few ones, VASP, exciting, FHIaims).

Mostly for @ndaelman and @lucamghi: shouldn't we try to keep this information in run.method.k_mesh? And a secondary question, should we even show it in results?

I can help to modify some parsers to grep this metainfo.