#2218 Initialize polar stereographics parameters for ellipsoidal earth

[hsoh-u]

Expected Differences

Five parameters are added for ellipsoidal polar stereo graphics projection. They should be initialized at GRIB, GRIB2, NC_MET and NC_PINTERP.

• Do these changes introduce new tools, command line arguments, or configuration file options? [No]
  
  If yes, please describe:
  

• Do these changes modify the structure of existing or add new output data types (e.g. statistic line types or NetCDF variables)? [No]
  
  If yes, please describe:
  

Pull Request Testing

• Describe testing already performed for these changes:
  

GHA should be passed with grib or grib2 inputs after merge back to main_v11.0 branch

• Recommend testing for the reviewer(s) to perform, including the location of input datasets, and any additional instructions:
  

I don't have the commands to test this (The example exists at METplus side)

• Do these changes include sufficient documentation updates, ensuring that no errors or warnings exist in the build of the documentation? [No]

• Do these changes include sufficient testing updates? [No]

• Will this PR result in changes to the test suite? [No]
  
  If yes, describe the new output and/or changes to the existing output:
  

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[JohnHalleyGotway]

I approve of these changes.

I see that the corresponding MET #2434 pull request which fixed this in develop triggered this METplus GHA run, and that run was successful.