feat: use typescript-eslint's EXPERIMENTAL_useProjectService

[JoshuaKGoldberg]

PR Checklist

• Addresses an existing open issue: fixes 🚀 Feature: Use typescript-eslint's project service parser option #1211
• That issue was marked as status: accepting prs
• Steps in CONTRIBUTING.md were taken

Overview

Unifies *.js and *.ts linting with the experimental project service option. Hooray!

In doing so, I found it easier to lint the script/*.js files by switching them to .ts.

This also removes the nice --no-dts optimization for pnpm build. Linting files like bin/index.js now has types, and lib/* needs those .d.ts generated.

[JoshuaKGoldberg]

The end-to-end creation tests are failing because they're trying to use ESLint 9. I'll fix that separately.

[github-actions]

🎉 This is included in version v1.59.0 🎉

The release is available on:

• GitHub releases
• npm package (@latest dist-tag)

Cheers! 📦🚀