JSON-LD Playground links from examples

[BigBlueHat]

It would be super nice to have JSON-LD Playground links available alongside any example which is itself complete JSON-LD (and doesn't contain elided sections/contents).

If this is something of interest to folks, I'm happy to add them "by hand" or look at automating the addition of the links (though I think that the elided scenarios might break that approach).

Anyhow. I think it'd be useful. 😄

[gkellogg]

This essentially duplicates the intention #26, and should be considered as part of that.

As part of the CI scripts, there is a Ruby script with extracts and does basic syntactic validation of all examples. This can be extended to automatically produce variations for expanded-, tabular, and turtle-representations (and YAML). It could also automatically encode a playground URL, if we decide to do this as well.

I'd also like to use the script to validate that the examples produce what's expected, which should then be fairly straight-forward. Obviously, any help, both in terms of a dynamic UI to show this, and the work necessary to produce and update the doc with these, would be helpful.