Add DIWG ancestry calls

[onursumer]

Fix #670

TODO:

• [x] Remove self-reported (ideally we add this in the demographics metadata when missing)
• [x] Call columns "Genomic Ancestry" or something like that
• [x] Better format the numerical values?

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Name	Status	Preview	Comments	Updated (UTC)
htan-portal-nextjs	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Nov 7, 2024 9:05pm

[onursumer]

Need to reprocess data since we merged release v6.1 (#706)

[onursumer]

Reprocessed the data and rebased