Collect case studies (and harvest the archives folder)

[tcr]

We should have a corpus of case studies in the case-studies/ folder which we can target Reach's design toward and help derive product requirements.

The easiest task would be to break out relevant case studies from the archives/ folder, which has a lot of old content for Reach.

Additionally, feel free to contribute your own idea you think Reach could help with!

[mulderp]

maybe an interesting source for inspiration https://www.opensensors.io/