Add schema.org support for OGC API Records html output

[kalxas]

https://schema.org/

[kalxas]

Some details here: geopython/pygeoapi#33

[github-actions]

This Issue has been inactive for 90 days. In order to manage maintenance burden, it will be automatically closed in 7 days.

[github-actions]

This Issue has been closed due to there being no activity for more than 90 days.

[kalxas]

I think this is still relevant