docs: add page for create-docusaurus API documentation

[Josh-Cena]

Pre-flight checklist

• I have read the Contributing Guidelines on pull requests.
• If this is a code change: I have written unit tests and/or added dogfooding pages to fully verify the new behavior.
• If this is a new API or substantial change: the PR has an accompanying issue (closes #0000) and the maintainers have approved on my working plan.

Motivation

Our create-docusaurus CLI is getting increasingly complex. Let's have a dedicated API documentation page for all options. This will also help us put less text in the installation guide, which is supposed to be brief.

Test Plan

Test links

Deploy preview: https://deploy-preview-7343--docusaurus-2.netlify.app/docs/api/misc/create-docusaurus/

[netlify]

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[github-actions]

⚡️ Lighthouse report for the deploy preview of this PR

URL	Performance	Accessibility	Best Practices	SEO	PWA	Report
/	🟠 70	🟢 100	🟢 100	🟢 100	🟢 90	Report
/docs/installation	🟢 91	🟢 99	🟢 100	🟢 100	🟢 90	Report

[slorber]

not sure why but it fails the fr build 🤷‍♂️

2:18:10 PM: - On source page path = /fr/docs/next/installation:
2:18:10 PM: -> linking to ./api/misc/create-docusaurus.md (resolved as: /fr/docs/next/api/misc/create-docusaurus.md)
2:18:10 PM:

[Josh-Cena]

Yes, I also noticed this😅 Everything is looking fine on Crowdin, though