create-astro --add option

[ascorbic]

Summary

Add a new flag to the create-astro tool that adds integrations to the newly-created site without needing to run astro add separately.

Background & Motivation

This came up when I was documenting how to create a new Astro site on Netlify, but it applies to any integration. I would like to be able to provide users a one-line command to bootstrap a new site. Currently this is either a multi-step process (create site, then cd into the directory and run astro add), or need a custom template. This would be a more lightweight option, designed for including in docs and automated installs/tests.

Goals

• allow a new site to be bootstrapped, complete with integrations, in a single command.

Example

npm create astro@latest --add tailwind

[Princesseuh]

Sounds great, I'd love to see this!