📝 Documentation: Make a docs website

[JoshuaKGoldberg]

Bug Report Checklist

• I have pulled the latest main branch of the repository.
• I have searched for related issues and found none that matched my issue.

Overview

I've been mentioning for a while now that I want to have a standalone URL website for this package. Filing this issue as something I can link to & track that with.

I'm not yet sure exactly how I want to make this. There are kind of three options, in increasing order of complexity:

1. 🍏 Standalone repo: having it be separate from this create-typescript-app repo
   • Advantage: Easiest setup with no need to mess with this repo's tooling
   • Disadvantage: Updates to the website become separate from the repo itself
2. 🍌 Inline in this repo: adding in some dependencies & scripts to generate a standalone site
   • Advantages: No separation between code and docs
   • Disadvantages: Added overhead of migration snapshots
3. 🍒 Converting this repo to a monorepo
   • Advantages: Lets the standalone site code be more separated from the CLI code
   • Disadvantages: most complicated dev setup; also blocked on 🚀 Feature: Make it easy to use across a monorepo #1064

I'm leaning towards 🍌 for now. But still pondering.

Additional Info

No response

[JoshuaKGoldberg]

Blocked on the create package in #1181.

[JoshuaKGoldberg]

I split out #2222 for using the create-typescript-app.dev domain. These can be split up: updating any links to this GH repo to the domain can come separately.