Add extra features to the Test262 results representation

[Razican]

The new Test262 (ECMAScript test suite) representation lacks some nice to have features:

• [x] A graph, maybe in a popover, to see the progress of the master branch commit by commit. The information is already available in the results.json file of the master branch, we just need to plot it.
• [x] Add a third column in the top of the conformance website, showing all the versions that have Test262 results (v0.10 and above). This should be just a small square with the stats and a small icon to show the full results at the bottom.
• [x] boa-dev/boa#1644
• [x] boa-dev/boa#1645
• [ ] Detect "builtins" and extra features when running tests to be able to ignore them or present them better.
• [ ] Allow running tests by filtering those requiring a particular Built-in or feature (instead of filtering by test-suite).
• [ ] Add some links / information to explain how the Test262 works.
• [ ] Add a legend on what each thing means on the results.
• [ ] boa-dev/boa-dev.github.io#149

[croraf]

If possible add a badge with current conformance percentage on the github main page, like:

[Razican]

Something else that's nice to have:

• Show compliance by feature (this requires a change in the results format).