Issue Template

Title: HTTP Compression Brotli support

Description:

Desired behavior

• Envoy is capable for decompressing HTTP payload using Brotli compression/decompression algorithm

Relevant Links:

https://github.com/google/brotli
https://quixdb.github.io/squash-benchmark/#results
https://github.com/google/brotli/tree/master/c
@bmadhavan @unicell @khgandhi @
/new-feature