Change Details

Needs to handle the three `sword-` formats listed on https://docs.softwareheritage.org/devel/swh-storage/extrinsic-metadata-specification.html#extrinsic-metadata-formats

Needs to handle the three `sword-` formats listed on https://docs.softwareheritage.org/devel/swh-storage/extrinsic-metadata-specification.html#extrinsic-metadata-formats by writing an indexer mapping for SWORD

Needs to handle the three `sword-` formats listed on https://docs.softwareheritage.org/devel/swh-storage/extrinsic-metadata-specification.html#extrinsic-metadata-formats by writing an indexer mapping for SWORD