wip: Update jpeg decoder.

[emilio]

I was trying to see an xray that I got recently (happy to email it privately if it helps), which fails to decode on the demo with:

JPX Error: Unsupported COD options (selectiveArithmeticCodingBypass) jpx.js:339:23

So this tries to update to openjpeg via https://github.com/mozilla/pdf.js/pull/17946, which should support it. However:

• It's very WIP (the image decodes correctly on the worker, but I only see black on the canvas, however I see correct metadata).
• I haven't updated all the references to the other decoders.
• It loads the non-jpeg decoders as a module which I can't test, but probably breaks them. I also need to update the sync decoders, which likely doesn't work.

I don't think I'll have time to finish this, but posting it here in case it saves someone time or someone has the time to finish it up.

Thanks.