refactor: use TS project references instead of running tsc multiple times

[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

We're finally doing it the right way™

Using a single tsconfig.json means the editor is able to provide the right hints since the root tsconfig.json controls everything. It also means faster type-checking, and better integration with external tools (that are unaware of our custom tsconfig files).

Test Plan

I've checked the build output and made sure the output is still correct.

Test links

Deploy preview: https://deploy-preview-_____--docusaurus-2.netlify.app/

Related issues/PRs

[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	🟠 89	🟢 99	🟢 100	🟢 100	🟢 90	Report

[github-actions]

Size Change: -11 kB (-1%)

Total Size: 796 kB

Filename	Size	Change
website/build/assets/js/main.********.js	599 kB	-11 kB (-2%)

ℹ️ View Unchanged

Filename	Size
website/.docusaurus/globalData.json	52.3 kB
website/build/assets/css/styles.********.css	106 kB
website/build/index.html	38.9 kB

_{compressed-size-action}

[slorber]

great 👍 didn't know about those refs