Add a static website for visualizing current spec pass rates, historical trends

[lopopolo]

I'd love to put together a website to visualize spec pass rates over time.

I'm imagining something like rust-toolstate: https://rust-lang-nursery.github.io/rust-toolstate/.

Maybe with some charts, maybe broken down by language/core/stdlib. Maybe broken down by class (e.g. String, ARGF, Regexp).

In terms of static site generation, something generated with eta + esbuild like the playground, www.artichokeruby.org, and rubyconf repositories would be something I'm comfortable maintaining.

See:

• Add a spec-runner configuration that tests all of Ruby Core artichoke#1088 (comment)
• Add a spec-runner configuration that tests all of Ruby Core artichoke#1088 (comment)
• https://twitter.com/artichokeruby/status/1428063424458625029

If someone is interested in picking up this ticket, please post some mocks so we can align on design.