add autocomplete example

[ryepup]

Proposed changes

demos creating updated datasets compatible with https://github.com/jaywcjlove/nginx-editor.

Had to set the reference-lib package as a "module" to avoid import errors like:

Named export 'Format' not found. The requested module '@nginxinc/reference-lib' is a CommonJS module, which may not support all module.exports as named exports

Checklist

Before creating a PR, run through this checklist and mark each as complete.

• I have read the CONTRIBUTING document
• If applicable, I have added tests that prove my fix is effective or that my feature works
• If applicable, I have checked that any relevant tests pass after adding my changes
• I have updated any relevant documentation (README.md and CHANGELOG.md)