[PostgresPuzzleList 1/N] Move puzzle listing to use postgres

[ewmson]

• move filtering to postgres query
• move postgres to jsonb to be able to query faster (indexes coming soon too)
• revamp NewPuzzleList.tsx to change query based on new filters and fetch more with scrolling

[vercel[bot]]

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[ewmson]

Decided to make this the first of a few different pull requests:

• [ support getting the correct solve count for puzzles]
• [make the puzzle actually load correctly when clicked (needs to make the puzzle model not use firebase)]
• [ add indexes to make search faster for the searches we have]

[ewmson]

For [make the puzzle actually load correctly when clicked (needs to make the puzzle model not use firebase)] , we actually load fine, I was just confused as my local pids did not match the prod ones.

[stevenhao]

Just merged in https://github.com/downforacross/downforacross.com/pull/149 and https://github.com/downforacross/downforacross.com/pull/150, both prod & staging should now be up to date with firebase's puzzle repo.

• the uploaded_at field is incorrect for all imported puzzles; i just set them to today's date. This may cause some weirdness in queries in the short term, but get smoothed out as more puzzles get uploaded.

[ewmson]

Cool, thanks for getting it backfilled.

[ewmson]

rebased off of new master to make vercel testing easier