Migrate repo to use GitHub Actions

[jasonroelofs]

Description

We are working on consolidating all CI to GitHub Actions.

Documentation

Does this require changes to the WorkOS Docs? E.g. the API Reference or code snippets need updates.

[ ] Yes

If yes, link a related docs PR and add a docs maintainer as a reviewer. Their approval is required.

[linear]

INFRA-2380 Migrate SDK pipelines to GHA

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.63%. Comparing base (34230a5) to head (6adc886).

❗ Current head 6adc886 differs from pull request most recent head a672979. Consider uploading reports for the commit a672979 to get more accurate results

❗ Your organization needs to install the Codecov GitHub app to enable full functionality.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #272   +/-   ##
=======================================
  Coverage   95.63%   95.63%           
=======================================
  Files          42       42           
  Lines         940      940           
=======================================
  Hits          899      899           
  Misses         41       41           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.