Docs: Website search

[JoshuaKGoldberg]

Describe the rule

https://perfectionist.dev is beautiful ❤️ - but doesn't have a search bar. I was trying to search for some options (#223) and that would have been handy. Would you be open to having one added?

Docs references for common site frameworks:

• https://starlight.astro.build/guides/site-search
• https://docusaurus.io/docs/search
• https://content.nuxt.com/usage/search

Code example

n/a

Additional comments

Sorry for using the wrong template 😅 there wasn't one I could find for docs / website stuff.

Validations

• [X] Read the docs.
• [X] Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.

[azat-io]

That's a good idea.

However, I don't have much time right now. I might not be able to do it until two weeks from now.