Auto generate chip support status for docs

[MabezDev]

We (mostly @jessebraham's work :D) used to manually maintain a manual table in #19, whilst this was mostly for tracking purposes, something like this is useful for new users to see the support status for the chip they wish to use at a glance.

I think we can use esp-metadata to generate a markdown table of chip support status for a given chip automagically.