feat: core metadata support and backfill

[joshuarli]

https://linear.app/getsentry/issue/DI-360/uv-upgrade-dumb-pypi-to-1150-and-add-support-for-core-metadata

[joshuarli]

@asottile-sentry what do you think so far, especially wrt backfilling? i just plan on reverting --rebuild after it runs

69f4a1d
https://github.com/getsentry/pypi/actions/runs/15984744173/job/45086927050
no upload-artifact: build didn't do anything but i added something to packages.ini - do you know why?

[asottile-sentry]

I think the backfill should maybe be a separate script that we delete afterwards?

[asottile-sentry]

@asottile-sentry what do you think so far, especially wrt backfilling? i just plan on reverting --rebuild after it runs

69f4a1d https://github.com/getsentry/pypi/actions/runs/15984744173/job/45086927050 no upload-artifact: build didn't do anything but i added something to packages.ini - do you know why?

looks like it did to me?

[joshuarli]

thanks for your feedback - think i have proper core metadata support now, idk what i was thinking yesterday - see output here https://github.com/getsentry/pypi/actions/runs/16009745935/job/45164718186?pr=1508#step:7:61

I think the backfill should maybe be a separate script that we delete afterwards?

as it stands now we can just run python3 -um make_index --rebuild --pypi-url https://pypi.devinfra.sentry.io --dest index one time - unless you want me to make a separate script? there's not much extra code with args.rebuild so...

[asottile-sentry]

since this repo uses merge workflow please clean up your commits before merging