Add section for all the projects' meetup notes

[natebass]

When there is a group that discusses a specific project at the weekly meetups, we want to encourage taking team meeting notes (example for TrashAI).

On each project page we can show a list of the 3 most recent team meeting notes and their date. This could provide a way for people to catch up on collaboration on the project that they might have missed.

There could be a page on opensac.org that shows all the team meeting notes, like an archive. This is optional, because they could just be on Google Drive and we could link to it.