Brotli decompression using JS implementation from Google (#267)

[vlechemin]

What does this PR do?

It implements brotli decompression (#267) in JS using:
https://github.com/google/brotli/blob/master/js/decode.js

The file size is pretty big, I'm not sure of the impact on performance. If the impact is too high for those not using brotli, we could remove the dictionary, it is supposed to work anyway (https://en.wikipedia.org/wiki/Brotli#cite_note-14).

Pushing decoded chunks in the transform method does not work but I didnt investigate why because this version should be equivalent speed wise. The test case is pretty big so I did not include it.

Thanks to @paperdave for his help on Discord.

• Documentation or TypeScript types (it's okay to leave the rest blank in this case)
• Code changes

How did you verify your code works?

• I included a test for the new code, or existing tests cover it
• I ran my tests locally and they pass (bun-debug test test/js/node/zlib/zlib.test.js)

[Jarred-Sumner]

Thank you for this. I really appreciate the time you spent on this PR, but I have some bad news.

This is something that's very performance sensitive, which means it must be implemented in native code. Ideally using the official library.