Show hard download statistics as opposed to "popularity"

[AKushWarrior]

I wanted to bring to attention an issue with the https://pub.dev website that I've run into a few times in enterprise environments. When using an open-source package, we oftentimes have to justify the use of that package by popularity and maintenance levels. While the "pub score" (formerly the maintenance score) works well for the latter, I have issues presenting a case for the former because pub.dev uses an arbitrary percentage to show popularity.

My superiors are often looking for download statistics (see cargo/npm for examples) and aren't satisfied with a percentage that lies on an unknown scale. As you might imagine, building out a Dart stack without using packages is impossible, so it would be nice to have a clearer indicator of exactly how many users a given package has.

[AKushWarrior]

This has been discussed in #2714. I'll close this and add my thoughts to that discussion.