New Core Contributor Onboarding Checklist

• Give maintainer access to these GitHub repos:
  • https://github.com/WordPress/wordpress-playground
  • https://github.com/WordPress/playground-tools
  • https://github.com/WordPress/blueprints
  • https://github.com/WordPress/blueprints-library
• Give write access to these NPM organizations
  • @wp-now
  • @php-wasm
  • @wp-playground