ci: Test in Bun

[nzakas]

Prerequisites checklist

• [x] I have read the contributing guidelines.

What is the purpose of this pull request?

Enable testing in Bun

What changes did you make? (Give an overview)

• Added a workflow file for Bun testing
• Added bun.lockb to .gitignore

Related Issues

Is there anything you'd like reviewers to focus on?

[Jarred-Sumner]

nice

[nzakas]

Looks like whatever temporary glitch the Ubuntu test had has been resolved. :tada: