WHATWG migration

[sisidovski]

As we discussed in https://github.com/whatwg/sg/issues/215, we're going to move URLPattern into WHATWG.

Here is the checklist that we should cover.

• [x] Reach WHATWG SG agreement: https://github.com/whatwg/sg/issues/215
• [x] Transfer repository from WICG to WHATWG
• [x] Create a logo: https://github.com/whatwg/whatwg.org/pull/427 and generally complete the checklist in https://github.com/whatwg/meta/blob/main/NEW-STANDARD.md
• [x] Update the document in this repository to account for this move
• [x] Add redirect for github.io URLs (like this): https://github.com/WICG/wicg.github.io/pull/22

cc @domenic @jeremyroman

[domenic]

(Note that I edited the last item on the checklist to reflect how we can redirect the github.io URLs.)

[domenic]

Given that we've broken https://wicg.github.io/urlpattern/, would one of the editors be willing to send a PR to add a redirect to the https://github.com/WICG/wicg.github.io repository?

Note that https://urlpattern.spec.whatwg.org/ doesn't display anything quite yet, but redirecting to that page is probably just as good as 404ing, and it's something we can do ahead of time.

[sisidovski]

I'm happy to take that task.

[sisidovski]

Sent https://github.com/WICG/wicg.github.io/pull/22

[domenic]

All done!

Some potential followup work in https://github.com/whatwg/urlpattern/issues/195.