feat: database deployment on Supabase

[jgoux]

This PR introduces the ability to deploy the in-browser database to Supabase.

I had to use a pretty complicated pipeline in order to do this:

This pipeline should be simplified once PGlite releases pg_dump in the browser, in which case we will be able to get rid of the browser-proxy in this scenario.

Infra tasks done:

• Deployed deploy-worker service on Fly staging environment
• Applied the migration to our Supabase staging project
• Added the new env variables to Vercel's preview environment
• Added the callback url "/api/oauth/supabase/callback" to the authorized callback urls in the Supabase Oauth app

Things to polish:

• Review scopes we truly need from the Supabase account during the Oauth app sign in: Databases read-only, Projects read+write, Organizations read-only.
• Handle the app removal from Authorized Apps in the organization's Oauth App's screen
• Reliability of the deployment process, currently it's a giant function which creates a new Supabase project (first deployment), wait for the project to be healthy, and then do the data transfer. This will be done later using Supabase Workflows
• Check for revokation at deployment start
• Use the management API to create a temporary db user for pg_restore to avoid storing the project's db password
• Implement the authorization flow in a new tab. Redirect to a "finalizing authorization" screen which will call the /oauth/callback api endpoint and communicate to the main tab through a BroadcastChannel on success. The main tab will then redirect to the deploy page. The app needs to be "locked" anyway so let's not overthink this and keep the current implementation.
• Save the org's name to display it in an intermediate dialog after the authorize dialog is done to explain to the user what's going to happen and have them confirm they want to do the deployment
• Add an intermediate dialog when clicking to "Deploy > Supabase" to show the infos we have about the integration (org name, project name, database and pooler urls) and an action to confirm the deploy/redeploy

[vercel]

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Name	Status	Preview	Comments	Updated (UTC)
database-build	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Nov 15, 2024 9:38am
postgres-new	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Nov 15, 2024 9:38am