feat: Add post api hook, also add userContext to onHandleEvent

[nkshah2]

Summary of change

• Adds post API hook to recipe config

Related issues

Test Plan

All existing tests pass

Documentation changes

None

Checklist for important updates

• [x] Changelog has been updated
• [ ] frontendDriverInterfaceSupported.json file has been updated (if needed)
  • Along with the associated array in lib/ts/version.ts
• [ ] Changes to the version if needed
  • In package.json
  • In package-lock.json
  • In lib/ts/version.ts
• [x] Had run npm run build-pretty
• [x] Had installed and ran the pre-commit hook
• [ ] Issue this PR against the latest non released version branch.
  • To know which one it is, run find the latest released tag (git tag) in the format vX.Y.Z, and then find the latest branch (git branch --all) whose X.Y is greater than the latest released tag.
  • If no such branch exists, then create one from the latest released branch.

Remaining TODOs for this PR

• [x] Add tests
• [x] Add userContext to onHandleEvent

[github-actions[bot]]

size-limit report 📦

Path	Size
lib/build/bundleEntry.js	9.63 KB (+1.22% 🔺)