Upgrade to wgpu 24

[torokati44]

See: https://github.com/gfx-rs/wgpu/releases/tag/v24.0.0

This cleans up a few TODOs and duplicated dependencies.

[torokati44]

This also raises MSRV to 1.81 and bumps wasm-bindgen to 0.2.97.

[github-actions]

Preview available at https://egui-pr-preview.github.io/pr/5610-wgpu-24
Note that it might take a couple seconds for the update to show up after the preview_build workflow has completed.

[torokati44]

I guess the labels should be dependencies and egui-wgpu. Sorry for not adding them upon PR creation.

I'll gladly split the different types of changes into several commits upon request.

[Wumpf]

Looking great, thanks for taking care of everything.

A lot of wgpu's objects can now be cloned which should save us plenty of Arc<> internally and in the interface. Will look into that in a follow-up

[Wumpf]

A lot of wgpu's objects can now be cloned

(this was missing from wgpu's changelog until just now 😅. Kinda huge for libraries!)

[Wumpf]

said follow-up is over here #5612

[reneleonhardt]

@torokati44 Could wgpu be upgraded to 25?
https://github.com/gfx-rs/wgpu/releases

[torokati44]

It has been for a while now, just not released yet: #6744

[reneleonhardt]

Oh, now I see, 178 commits in the last 5 months are still not enough for 0.32...
0.31.1...main

Even when only 98 commits were needed to release 0.31:
0.30.0...0.31.0

The milestone contains only 10 / 20 / 800 (open, milestone, project) issues, seems like it's not easy to see what's still required to reach 0.32:
https://github.com/emilk/egui/milestone/8

[Wumpf]

there's gonna be an egui release quite soon, likely this or next week :)