Duplicate case studies for Supabase

[Fermain]

These should be merged into one!

[MariuszRozycki]

Can I get a little bit more details?

[Fermain]

#105
#38

We have two Supabase case studies and it would be great to merge these into a single case study

[MariuszRozycki]

Do you mean to read content of #105 and #38, made some changes and send PR with suggestions to you?