Support global registration like global-agent (#314)

[crutch12]

Implementation is mostly taken from https://github.com/gajus/global-agent

I couldn't write working tests... It would be great if somebody could help!

[changeset-bot]

⚠️ No Changeset found

Latest commit: 3aaebcf

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types

Click here to learn what changesets are, and how to add one.

Click here if you're a maintainer who wants to add a changeset to this PR

[vercel]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Updated (UTC)
proxy-agents	✅ Ready (Inspect)	Visit Preview	Nov 23, 2024 11:15am

[crutch12]

Hi @TooTallNate 👋

Could you check it out?