Experiment with JSON to generate Core-AAM mapping tables

[spectranaut]

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Closes: w3c/core-aam#258

Extracting the data wasn't too hard -- especially with the help of generative AI to write the extraction and generation scripts. I added the extraction script but in the long run I don't think anything like that would be checked in.

Some questions are:

• Is editing a JSON like this better than editing tables?
• Can we actually use this JSON to write tests?

About test writing:

• We would need to add more metadata in order to to this. For example, the "test" html, like <div id="test" role="blockquote"></div>. Sometimes we will want to test variations in the markup as well.
• Also, not everything will be so easy to programmatically write tests from the prose alone, so we would have to mark/know which things could auto generate tests and which can't?

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