Chapter 6: Merge "deploy" and "create database" step in Learn

[delbaoliveira]

We need to add the "create database" step as part of the template when we deploy for the first time, so the first deployment does not fail.

https://nextjs.org/learn/dashboard-app/setting-up-your-database

Related issue: https://github.com/vercel/next.js/discussions/67341