Implement "book a demo" functionality

[abrichr]

We want to let users book a demo online.

See e.g. https://ro.am/

What can we use that's off the shelf?

[abrichr]

Eg

https://github.com/DariusGarcia/appointment-scheduler

https://sebiweise.dev/effortlessly-schedule-meetings-with-a-custom-calendly-nextjs-application

[JosephVoid]

I'll handle this