Add analysis mode for Sentinel-3 SLSTR RBT product

[konstntokas]

Closes #16

• Sentinel-3 SLSTR Level-1 RBT products are now supported in analysis mode. This
  allows data from bands A, B, F, and I — in both nadir and oblique viewing
  geometries — to be represented on a unified grid within a single dataset.
• Sentinel-3 SLSTR datasets are now terrain-corrected using the elevation
  information provided within the product itself.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

Files with missing lines	Coverage Δ
xarray_eopf/amodes/sentinel2.py	100.00% <100.00%> (ø)
xarray_eopf/amodes/sentinel3.py	100.00% <100.00%> (ø)
xarray_eopf/backend.py	100.00% <100.00%> (ø)
xarray_eopf/constants.py	100.00% <100.00%> (ø)
xarray_eopf/version.py	100.00% <100.00%> (ø)

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[TonioF]

Code looks good, but when I tried to run the example notebook, I received a FileNotFoundError. Do you have an idea what's going on?

[konstntokas]

Code looks good, but when I tried to run the example notebook, I received a FileNotFoundError. Do you have an idea what's going on?

Did this happen for the Sentinel-3 OLCI Level-2 LFR product?

Unfortunately, they deprecated this example. I selected a new one. Update will come.

[TonioF]

Code looks good, but when I tried to run the example notebook, I received a FileNotFoundError. Do you have an idea what's going on?

Did this happen for the Sentinel-3 OLCI Level-2 LFR product?

Unfortunately, they deprecated this example. I selected a new one. Update will come.

No, I directly went to test the SLSTR L1 B product. I can't make statements about the others.

[konstntokas]

Code looks good, but when I tried to run the example notebook, I received a FileNotFoundError. Do you have an idea what's going on?

Did this happen for the Sentinel-3 OLCI Level-2 LFR product?
Unfortunately, they deprecated this example. I selected a new one. Update will come.

No, I directly went to test the SLSTR L1 B product. I can't make statements about the others.

Same problem for SLSTR L1 RBT product. I also exchanged the example there. All the examples are running now. see uodated open_sen3.ipynb.

[TonioF]

Overall, it looks good to me. One thing about the datatree attributes in the notebook: Those seemed quite unusable. Is it possible to organise them in dictionaries?

[konstntokas]

Overall, it looks good to me. One thing about the datatree attributes in the notebook: Those seemed quite unusable. Is it possible to organise them in dictionaries?

Yes the attributes are awful. Already discussed within the consortium. But they want to keep it this way. So for native mode, we will present them as is. For analysis mode, we already modify them by removing the stac_discovery dictionary, and present the other_metadata so that it renders nicely. See: https://github.com/EOPF-Sample-Service/xarray-eopf/blob/main/xarray_eopf/amodes/sentinel3.py#L118. After Sentinel-1 implementation, we will see if we can unify the attributes for all three products somehow.