Adding Converters for mlcroissant[geo]

[HarshShinde0]

Introduce mlcroissant Converters for GeoCroissant

Add NASA UMM-G and STAC (SpatioTemporal Asset Catalog) converters to transform geospatial metadata into Croissant format. Includes demo notebooks for both converters.

Cc: @omshinde

[github-actions]

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[HarshShinde0]

Hi @benjelloun,

The CI was failing due to a deprecated pip install syntax in the bounding-boxes.ipynb notebook. The old #egg= fragment syntax is now invalid and produces this error:

Previous:

!apt-get install -y python3-dev graphviz libgraphviz-dev pkg-config
!pip install "git+https://github.com/${GITHUB_REPOSITORY:-mlcommons/croissant}.git@${GITHUB_HEAD_REF:-main}#subdirectory=python/mlcroissant&egg=mlcroissant[dev]"

I've fixed it with the following changes:

!sudo apt-get install -y python3-dev graphviz libgraphviz-dev pkg-config
!pip install "mlcroissant[dev] @ git+https://github.com/${GITHUB_REPOSITORY:-mlcommons/croissant}.git@${GITHUB_HEAD_REF:-main}#subdirectory=python/mlcroissant"

if this looks correct we can use it