Update gint fix files/parm files

[JessicaMeixner-NOAA]

What new functionality do you need?

Now that we no longer support multi-grid, this simplifies the interpolation of grids for WW3 since there can only be 1 input/computational grid for the output grids.

We can now create generic interp.inp.tmpl files such as: https://github.com/NOAA-EMC/global-workflow/blob/develop/parm/wave/at_10m_interp.inp.tmpl

And then in the fix files add both the computational and target grid in the name: ww3_gint.WHTGRIDINT.bin.target -> ww3_gint.WHTGRIDINT.bin.comp.target

which will make the workflow more flexible, and could allow us to add the output grids to a low resolution test which would then enable downstream testing as well.

What are the requirements for the new functionality?

Make the gint post processing more flexible and have the target and computational grid be generic in the parm files and require both names in the fix files.

Acceptance Criteria

CI tests pass
Add new output grids to low resolution for downstream testing.

Suggest a solution (optional)

No response