Would PR for brotli support be entertained?

[justend29]

Within the compression features of iostreams, I'm considering adding support for brotli compression. It's a very common compression format, particularly on the web. It supports streaming with various window sizes, making it an optimal candidate for iostreams.

Before I invest any time into this support, I'd like to know if the format is of interest, of if there are known characteristics of brotli that have previously excluded it from considering (other than effort to support).