CompressionStream & DecompressionStream APIs

[QuiiBz]

We have support for streaming APIs (ReadableStream, WritableStream, ...) thanks to web-stream-polyfill, but not for CompressionStream & DecompressionStream. Can we use an existing polyfill?

https://wicg.github.io/compression/#compression-stream
https://wicg.github.io/compression/#decompression-stream

[abdullahranginwala]

I believe we can use the pako library as a fallback implementation to add support for CompressionStream and DecompressionStream APIs. It can provide this support and is easy to integrate. We consider using this library to solve this issue

[QuiiBz]

Done in #932!