[BA] Badges

[aj-codecov]

Context:
With Codecov's coverage offering there is an ability to create badges to highlight the coverage of a given repo on a readme, this not only allows developers of that repo to quickly understand their coverage, but also allows visitors to that repo to get at a glance info about that repo. Historically these have been well adopted and serve to highlight Codecov all over a code host as a marketing mechanism.

Problem to Solve
As a developer I'd like a way to highlight my bundle stats on a repo and give visitors an idea of the size of my library/dependency/app.

Proposed Solution
A bundle badge.

We could probably implement this the same as flags/components with bundle=<bundle-name> after badge.svg? and avoid UI work altogether