Create script to generate topic cache from mcf.

[keyurva]

• The MCF is the latest MCF provided by the UN.
• The topic cache json and sentence CSV are generated by the script.

[dwnoble]

Thanks Keyur!

Can you remove the sheets_svs.csv file? I think it does have some issues so i'd rather keep the oder version that we know produces a good topic cache output

[keyurva]

The old one is the one that will continue to be used. The sheets_svs.csv that will be used is this one: /~https://github.com/datacommonsorg/website/blob/732f6da6d568e2efd8e7e210796b818b10980163/tools/nl/embeddings/input/sdg/sheets_svs.csv and not the one from this PR. It will need to be copied to the embeddings directory if it were to be used.

[dwnoble]

Got it-that makes sense.

Thanks keyur!