[WIP] feat: test old TypeScript version

[JoshuaKGoldberg]

PR Checklist

• Addresses an existing open issue: Add automated regression testing against old TS versions #1752
• That issue was marked as accepting prs
• Steps in CONTRIBUTING.md were taken

Overview

Notes:

• https://github.com/typescript-eslint/typescript-eslint/runs/7489493075?check_suite_focus=true -- old babel types break 3.3.1

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• nx run-many --target=build --all --parallel --exclude website --exclude website
• nx run-many --target=build --all --parallel --exclude website --exclude website
• nx run-many --target=build --all --parallel --exclude website --exclude website
• nx run-many --target=build --all --parallel --exclude website --exclude website

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[typescript-eslint]

Thanks for the PR, @JoshuaKGoldberg!

typescript-eslint is a 100% community driven project, and we are incredibly grateful that you are contributing to that community.

The core maintainers work on this in their personal time, so please understand that it may not be possible for them to review your work immediately.

Thanks again!

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[JoshuaKGoldberg]

This was fun to play around with. I give up.