Convert SCRIP files to CDF5 format for moab

[xylar]

This is more efficient than partitioning them as we did previously.

Copilot summary

This pull request refactors the _build_map function in pyremap/remapper/build_map.py to improve compatibility with MOAB by introducing a new method for converting SCRIP files to CDF5 format and removing the partitioning logic. The most important changes include the addition of a _convert_to_cdf5 function and the removal of the _moab_partition_scrip_file function.

Changes to improve MOAB compatibility:

• Replaced _moab_partition_scrip_file with _convert_to_cdf5, which converts SCRIP files to the CDF5 format required for MOAB compatibility. This simplifies the workflow by removing partitioning logic and using the ncks tool for file conversion. ([pyremap/remapper/build_map.pyL96-R113](https://github.com/MPAS-Dev/pyremap/pull/121/files#diff-129a160e000bfecfdac3efea475ddcf99d3251f6f295871c3c0cc08f3c5bcdf6L96-R113))
• Updated _build_map to check the format of source and destination descriptors and invoke _convert_to_cdf5 when the format is not NETCDF3_64BIT_DATA. This ensures compatibility with MOAB while maintaining flexibility for other formats. ([pyremap/remapper/build_map.pyL61-R71](https://github.com/MPAS-Dev/pyremap/pull/121/files#diff-129a160e000bfecfdac3efea475ddcf99d3251f6f295871c3c0cc08f3c5bcdf6L61-R71))

[xylar]

This isn't working in MOAB for planar meshes in my testing.