WebGPU API spec editorship changes

Hey all,

As you may know *Myles Maxfield stepped down from WebGPU API spec
editorship* a couple months ago after a couple years of great
contributions, even if a bit less visible as they were happening a lot
during discussions with other editors. First of all thank you Myles for all
the effort put into making WebGPU an ergonomic, coherent and consistent
spec!

Following this Kelsey and myself are pleased to announce that *Jim Blandy
will join as a new spec editor for the WebGPU spec!* He's shown a great and
increasing understanding of the current spec, attention to details, and is
in the trenches of making a WebGPU implementation.

After a first release of WebGPU in a first browser, we are now refining the
spec for other implementations and starting to extend it carefully. Jim's
perspective will be very valuable in this evolution!

Cheers,

Corentin