Add Faust.js tutorial

[kellenmace]

Add a starter Next.js example project to be used with the soon-to-be-released Learn Faust tutorial.

The PR for the tutorial that will make use of this example app is here:
https://github.com/wpengine/faustjs.org/pull/259

[changeset-bot]

⚠️ No Changeset found

Latest commit: 717a4d5

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

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[github-actions]

📦 Next.js Bundle Analysis for @faustwp/getting-started-example

This analysis was generated by the Next.js Bundle Analysis action. 🤖

This PR introduced no changes to the JavaScript bundle! 🙌