Unfinished example of a RADS to ioda converter

[guillaumevernieres]

Description

This PR adds a prototype IODA converter that will be used as a template for the other netdcf observation files that will need to be converted.
I added a base class for the conversion in NetCDFToIodaConverter.h, it probably could do more but for now the only thing useful it does is saving the ioda file.

RADS to IODA implementation

• The derived class from the above that actually does something useful is called Rads2Ioda and it implements the reading of the RADS netcdf files, which is a virtual function of NetCDFToIodaConverter
• The application code is under obsproc/applications

Testing

• I added a sub-sampled cdl RADS file that is converted back to netcdf in a ctest
• The ctest reads the RADS netcdf file and creates a IODA file. It's not testing anything more than successful completion
• The converter is not complete, it's missing most of the MetaData and a few other things ...

Issues addressed

• fixes Create template and example based on RADS altimetry to ioda #607

[CoryMartin-NOAA]

[guillaumevernieres]

I think the test will fail, there's a bug in the oops develop that was probably cloned by the ci ... The culprit pr was just reverted ~30mn ago. Zut!

[AndrewEichmann-NOAA]

Looks ok - what's a cdl file?

[CoryMartin-NOAA]

@AndrewEichmann-NOAA it's a text file in the same format as what ncdump dumps out that you can use to create a netCDF file.

[emcbot]

Automated Global-Workflow GDASApp Testing Results:
Machine: hera

Start: Fri Sep  8 16:05:50 UTC 2023 on hfe07
---------------------------------------------------
Build:                                 *SUCCESS*
Build: Completed at Fri Sep  8 17:13:09 UTC 2023
---------------------------------------------------
Tests:                                 *SUCCESS*
Tests: Completed at Fri Sep  8 17:34:31 UTC 2023
Tests: 100% tests passed, 0 tests failed out of 51

[emcbot]

Automated Global-Workflow GDASApp Testing Results:
Machine: orion

Start: Fri Sep  8 11:02:50 CDT 2023 on Orion-login-1.HPC.MsState.Edu
---------------------------------------------------
Build:                                 *SUCCESS*
Build: Completed at Fri Sep  8 12:26:52 CDT 2023
---------------------------------------------------
Tests:                                 *SUCCESS*
Tests: Completed at Fri Sep  8 13:01:11 CDT 2023
Tests: 100% tests passed, 0 tests failed out of 51