🛠 Tooling: Extract repository label setting into its own package

[JoshuaKGoldberg]

Bug Report Checklist

• I have tried restarting my IDE and the issue persists.
• I have pulled the latest main branch of the repository.
• I have searched for related issues and found none that matched my issue.

Overview

Right now, the setting of repository labels is done with some internal scripts:

• https://github.com/JoshuaKGoldberg/create-typescript-app/blob/617b636052fc9ac8f3d43760966200da5f47f4c0/src/steps/initializeGitHubRepository/labels/outcomeLabels.ts: where the labels are defined
• https://github.com/JoshuaKGoldberg/create-typescript-app/blob/063346e3383a4cff91761725dad2c0e60927b8c9/src/steps/initializeGitHubRepository/labels/initializeRepositoryLabels.ts: figures out existing equivalents with the GitHub API and CRUDs as necessary

I think that would be a nice package on its own. There's no need to tie it into CTA/create at all.

Additional Info

This would also make onboarding to the create engine easier. I could have it be a script run as part of setup, like a npx set-github-repository-labels ${outcomeLabels}.

Thus, I'll note this as blocking #1752.

💖

[JoshuaKGoldberg]

https://github.com/JoshuaKGoldberg/set-github-repository-labels ✨

[github-actions]

🎉 This is included in version v1.77.1 🎉

The release is available on:

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

Cheers! 📦🚀