Incorporate additional web features mappings

[jamesnw]

With the switch to the web features explorer API, we have access to data mappings from web-features-mappings. We could incorporate them in some way. MDN links are perhaps the most clearly useful?

Current items-

• chrome-use-counters
• developer-signals
• interop
• mdn-docs
• standards-positions
• state-of-surveys
• wpt

[mirisuzanne]

yeah, interop and mdn stand out to me