feat(chart.js): make basis for future work

[MarquiseRosier]

this commit will start us with a graphing technology, as well as a way of tying different charts and different data to a block

Please always provide the GitHub issue(s) your PR is for, as well as test URLs where your change can be observed (before and after):

Fix #

Test URLs:

• Before: https://main----.hlx.page/
• After: https://----.hlx.page/

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[langswei]

Good enough for initial merge to the other repo from my perspective, just two suggestions for now:

1. For engineer-data.js, I would suggest more manipulation in sql and less in javascript.
2. For engineer-dom.js, it reads like every instance of the block will require a code change. I don't know if I'm reading it correctly or not, and I understand your comments on our call earlier about having extension points but I think extensions should be reserved for exceptions rather than all instances.