Doxygen: io/module_wrt_grid_comp.F90 and io/post_fv3.F90 and io/post_nems_routines.F90

[edwardhartnett]

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Description

More doxygen. This PR is ready to merge.

Issue(s) addressed

Part of https://github.com/NOAA-EMC/fv3atm/issues/760

Testing

Documentation changes only.

Dependencies

N/A

[edwardhartnett]

@junwang-noaa and @DusanJovic-NOAA this is the next branch that needs documentation added...

[edwardhartnett]

@junwang-noaa as requested I combined the two open documentation PRs into this one.

I believe this is ready to merge.

[edwardhartnett]

Can we get this PR merged please?

[DusanJovic-NOAA]

Can we get this PR merged please?

The github workflow build failed. https://github.com/NOAA-EMC/fv3atm/actions/runs/10237492400/job/28320865752?pr=769#step:6:2435

We switched to using mpi_f08, only use mpi_f08 is needed.

https://github.com/NOAA-EMC/fv3atm/pull/769/files#diff-30ae84672211025ca74b9b43d466053a90e396f69036a71a741f8efa2f65f968R30-R31