Improve the Vercel setup

[cball]

Right now, we:

• Expect the user to modify the GitHub Actions workflow to properly set the Vercel scope
• Have unclear instructions on how to add a database
• Have unclear instructions on how to add secrets into Vercel

Ideally, we would:

• Ask the user what team they will be deploying to. Bonus if we can use the vercel CLI to do this.
• Direct the user to documentation for supported database providers. Is there something we can/should do with Prisma here?
• Ask the user if they want to deploy now in order to link the project and get proper values for GitHub Actions.
• Walk them through setting the secrets

[cball]

Additional information in this comment. We should definitely prompt for the team.