Use file names instead of fort units and use NetCDF format input and output for HAFS VI related procedures

[BinLiu-NOAA]

Description

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Further improve and modernize HAFS vortex initialization (VI) related Fortran source code by switching to use file names (instead of fort units) and use NetCDF format (instead of binary format) for input and output files (when appropriate).

Proposed solution

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Update the HAFS VI related Fortran source codes to enable the above-mentioned capabilities.

Status (optional)

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Related to (optional)

Directly reference any related issues or PRs in this or other repositories, and describe how they are related. Examples:

• fixed by hafs-community/hafs/pull/<pr_number>