feat: added luma plugin

[rishabhraj36]

Description

Related issue:

Type of Change

• 🐛 Bug fix
• ✨ New feature
• 🌐 New site adapter
• 📝 Documentation
• ♻️ Refactor
• 🔧 CI / build / tooling

Checklist

• I ran the checks relevant to this PR
• I updated tests or docs if needed
• I included output or screenshots when useful

Adapter Notes

• Updated generated or lean docs when command discoverability changed
• Used positional args for the command's primary subject unless a named flag is clearly better
• Normalized expected adapter failures to CliError subclasses instead of raw Error

Screenshots / Output

[github-actions]

🔴 Documentation update likely missing — high confidence

The automated review found 1 likely missing documentation update.

Findings

1. README — A new Luma plugin (webcmd-plugin-luma) has been added to manage hosted Luma events, registration questions, and guests.
   • Changed: plugins/luma/README.md
   • Evidence: Manage hosted Luma events, registration questions, and guests through the account signed in to the Webcmd browser profile.
   • Suggested update: README.md
   • Why: The new `luma` plugin is not listed in the Community plugins table in the root README.md, which catalogs available community plugins.

This review is advisory and does not block merging.