Add Vercel Deployment once we have minimal CLI + Web generators ready

[ovflowd]

We should add Vercel Previews for the mdx-html generator (and other possible generators, like json and react-web in the future); So that within Pull Requests and commits to main we can preview the changes to API docs.

In the future, once the tooling is complete to serve the legacy API docs styles, we could probably set up the production API docs (nodejs.org/api) to be deployed from here 🤷

This issue concerns adding Vercel deployments and adequately configuring the scripts for Vercel so that it knows how to deploy this.

We probably can achieve that with a scripts/deployment.mjs