Add authors/contributors to the landing page?

[seisman]

Currently, we only mention the "seismo-learn team" on the landing page (https://seismo-learn.org/seismology101/), i.e.,

I'm thinking about adding more details about the "authors"/"maintainers". Maybe we should add a team gallery to the landing page, like https://www.pygmt.org/dev/team.html or https://github.com/all-contributors/all-contributors#contributors-

[seisman]

Ping @core-man for thoughts.

[core-man]

https://github.com/all-contributors/all-contributors#contributors-

Sounds good. We could also use "founder", "maintainer" and "contributor".

[seisman]

Closed by #687