add jpegxl support

[joskezelensky]

Have you read the Contributing Guidelines on issues?

• I have read the Contributing Guidelines on issues.

Motivation

jpeg-XL is a cutting-edge new image codec that is faster, better at lossy compression than any other image codec and has faster image decompression. Webp is unreliable and jpeg can have a lot of artifacts
So why is jpeg-xl not supported? maybe because it isn't supported by chromium, but hey. If docosaurus supports jpeg-xl before chromium does again, it will be already implemented.

Self-service

• I'd be willing to do some initial work on this proposal myself.

[slorber]

What does it mean for Docusaurus to support jpegxl according to you?

What prevents you from implementing a Docusaurus plugin to add this support on your own?

The goal of Docusaurus is not to support everything out of the box: we rely on the community and our plugin ecosystem for that and only include the most common, well-supported things in the core repo/packages. If something is not supported in all browsers yet, it's unlikely we encourage usage of it by creating something custom to support it.

---

We use Webpack image loader to allow require("./img.png") syntax:

    images: () => ({
      use: [loaders.url({folder: 'images'})],
      test: /\.(?:ico|jpe?g|png|gif|webp|avif)(?:\?.*)?$/i,
    }),

If you just want us to add support for .jxl extensions, we could do that easily.

But is it what you actually want?
I don't know. 🤷