WebGPU feature brainstorm / prioritization

Hey all,

As discussed in the meeting Monday here's a spreadsheet
<https://docs.google.com/spreadsheets/d/19jeGI3uLwVQryUmW12rxaWJe4FTbFBwVi-uEGdwhLQ8>
for
brainstorming features we want for the first version of WebGPU and after
that first version. The idea is that each "org" would list the priority
they see in various features for the API and WGSL and next meeting on
Monday we'll go through the results and decide what goes for sure in V1,
what we want in V1 and what goes after.

This idea is similar to a process used in Khronos for prioritization hence
the focus on "orgs" but W3C is not "org" based so there's a bit of a
mismatch. Please let me know if you have suggestions to improve this.

I gave edit access to the usual suspects but feel free to request edit
access if you don't have it.

Cheers,

Corentin