v2 Bundle analyzer: Include compressed (gzip, brotli, etc.) asset sizes

[wbinnssmith]

🙋 feature request

The bundle analyzer currently reports the number of bytes an asset is responsible for when analyzing bundles. However, this doesn't correlate with bundle sizes after they're compressed with something like gzip.

🤔 Expected Behavior

Include the approximate number of bytes an asset is responsible for in a bundle when the bundle's contents are run through compression like gzip.

cc @peterwilliams