Enable Brotli compression for CDN content
We are currently using for CDN assets gzip and not brotli (as on GL servers directly) as there is quite a difference in size and compression speed. It would be great to enable brotli for clients that are capable of handling it as we already do on GitLab.com servers directly. This is especially important for all our text based content like JS + CSS bundles.
For example our main.js bundle (8% size difference just on this one): 329KB from CDN (https://assets.gitlab-static.net/assets/webpack/main.eb414125.chunk.js) 303KB from GL directly (https://gitlab.com/assets/webpack/main.eb414125.chunk.js)