Integrate tabled library

After some research here, I actually think the best way to include the tabled dependency is through package.json, instead of through composer. The reason is two fold.

1. There are already dependencies managed in package.json, so it will keep everything centrally managed.
2. The composer installation pattern requires a different composer command via the composer merge plugin, which is built for optional dependencies. While the dependency could be optional, I'd argue that this would create more confusion and work for 99% of the use cases, where you just want a fully responsive and accessible table element out of the box.

@javier I pushed a two-fold fix:

1. Remove yarn dependency, tracking the tabled library inside this repository. This removes the need for module users to install yarn.
2. Add a configuration page for end users to change the CSS selector which applies tabled, along with a sensible default.

@bronzehedwick it looks great! I left a bunch of comments regarding semantic aspects, once those are resolved I'll test it in my local.

Thanks @javier! I pushed fixes for the issues you raised, aside from the ones needed in follow ups.

@javi-er Finished addressing the feedback you provided. Let me know if there are other changes needed!

@bronzehedwick I think this is good to go! I can confirm that the tabled library is being loaded and the selector can be configured.
There are some styling issues though that can be fixed in a follow up ticket (at least when I test this with a project with custom styles).
Great job!

Automatically closed - issue fixed for 2 weeks with no activity.