Added --hipcc-func-supp flag to avoid extremely long compilation time and huge memory usage of hipcc

See https://github.com/ROCm-Developer-Tools/HIP/issues/2285

All kernels using this will have to be refucktored, because
__launch_bounds__ has different meaning in HIP than in CUDA. See [1] for
details.

[1]: https://rocmdocs.amd.com/en/latest/Programming_Guides/HIP-GUIDE.html#device-side-dynamic-global-memory-allocation

New mesh readers/writers, Grid and DistributedGrid refactoring

See merge request !97

It was replaced with PVTIWriter and PVTIReader.