[FEATURE]: solution for running Supabase on Vercel Edge functions

### Describe what you want

Supabase setup currently uses `postgres.js` which doesn't work on Vercel Edge functions.

## Solution:
(Need to add this to the docs)

Use `@vercel/postgres` package to connect to Supabase db - as recommended in their [Official Supabase X T3 Turbo Template](https://github.com/supabase-community/create-t3-turbo/blob/main/.env.example#L8)