Update Clavrx reader for netcdf files

[joleenf]

The PR updates the current CLAVRX HDF reader to include a netcdf reader for geostationary files currently being produced.

• Closes Support for clavrx netcdf files #1661
• Tests for netcdf still needed

[codecov]

Codecov Report

Merging #1716 (3a88cdd) into main (217c6e2) will increase coverage by 0.40%.
The diff coverage is 90.69%.

@@            Coverage Diff             @@
##             main    #1716      +/-   ##
==========================================
+ Coverage   92.43%   92.83%   +0.40%     
==========================================
  Files         258      260       +2     
  Lines       38273    38552     +279     
==========================================
+ Hits        35376    35791     +415     
+ Misses       2897     2761     -136     

Flag	Coverage Δ
behaviourtests	4.81% <0.00%> (-0.04%)	⬇️
unittests	93.38% <90.69%> (+0.40%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
satpy/readers/clavrx.py	89.37% <86.53%> (-3.32%)	⬇️
satpy/tests/reader_tests/test_clavrx.py	100.00% <100.00%> (ø)
satpy/tests/reader_tests/test_clavrx_nc.py	100.00% <100.00%> (ø)
satpy/resample.py	80.24% <0.00%> (ø)
satpy/tests/test_dataset.py	100.00% <0.00%> (ø)
satpy/tests/reader_tests/test_nucaps.py	100.00% <0.00%> (ø)
satpy/tests/reader_tests/test_abi_l2_nc.py	100.00% <0.00%> (ø)
satpy/tests/reader_tests/test_slstr_l1b.py	100.00% <0.00%> (ø)
satpy/readers/fci_l1c_fdhsi.py
satpy/tests/reader_tests/test_fci_l1c_fdhsi.py
... and 14 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 217c6e2...3a88cdd. Read the comment docs.

[coveralls]

Coverage increased (+0.4%) to 93.325% when pulling 3a88cdd on joleenf:clavrx into 1289aa3 on pytroll:main.

[joleenf]

The PR updates the current CLAVRX HDF reader to include a netcdf reader for geostationary files currently being produced.

Closes #1661
Tests for netcdf reader have been added.

[djhoese]

A couple small changes, otherwise this looks pretty good to me. You mentioned you were worried about using the utilities classes correctly. Was there something specific you wanted me to look at?