Expose wgpu::TextureView-descriptor/texture/render_extent

[Wumpf]

Description

Implements a bunch of methods on TextureView that the spec warrants
(and that would have been real useful just now for me 😄)

See:
https://www.w3.org/TR/webgpu/#texture-view-creation

A bit of an annoying consequence is that views now keep their textures alives all the way. But the underlying resources were already kept alive necessarily, so in practice this doesn't make much of a difference.

Testing
Adds checks to existing view tests. Not covering everything in excruciating detail, but covers some interesting aspects actually (automatic format changes).

Squash or Rebase?
Squash

Checklist

• Run cargo fmt.
• Run taplo format.
• Run cargo clippy --tests. If applicable, add:
  • --target wasm32-unknown-unknown
• Run cargo xtask test to run tests.
• If this contains user-facing changes, add a CHANGELOG.md entry.

[JMS55]

Could we get this in for wgpu 26? This is a huge improvement!

[Wumpf]

So turns out I actually missunderstood the spec here: those are internal properties as signified by the brackets in the spec.

I agree this would still be useful to have, but I think all the complexity for the altered descriptor isn't really warranted then. I think now we should instead do it more like on Texture and expose fields from the descriptor; I'm not entirely sure about all the property resolving since it's quite a bit of code 🤔 -
texture is super useful, but also affects how long textures live, so bit of a tradeoff. But I'm in favor of having it.
render_extent is still nice to have, should leave it in.

@JMS55 which were the parts you were particularly interested in?

[JMS55]

Just texture, so that I can pass texture views around and get rid of https://github.com/bevyengine/dlss_wgpu/blob/9e751fd08a88b57463f03ba0237657a01af7e6c4/src/render_parameters.rs#L85-L89.