fix: add required Artifact Hub annotations for Headlamp plugin

Add missing Headlamp plugin annotations required by Artifact Hub:
- headlamp/plugin/archive-url: GitHub release URL for v0.2.0 tarball
- headlamp/plugin/archive-checksum: SHA256 checksum of plugin archive

Changes:
- Added annotations section with archive URL and checksum
- Updated provider name from placeholder to "cpfarhood"
- Included v0.2.0 plugin tarball (99.5 kB)

This fixes the Artifact Hub validation error:
  "required annotation headlamp/plugin/archive-url not provided"
  "required annotation headlamp/plugin/archive-checksum not provided"

Plugin tarball details:
- File: headlamp-sealed-secrets-0.2.0.tar.gz
- SHA256: 55a1a387d65a8d92545033670d07dedd77a72fd228125331ab93136f8ac87f1c
- Size: 99,567 bytes
- Contents: dist/main.js (359 kB), package.json

Next steps:
1. Create GitHub release v0.2.0
2. Upload tarball to release
3. Artifact Hub will pick up on next scan

Generated with [Claude Code](https://claude.ai/code)
via [Happy](https://happy.engineering)

Co-Authored-By: Claude <noreply@anthropic.com>
Co-Authored-By: Happy <yesreply@happy.engineering>

headlamp-sealed-secrets/artifacthub-pkg.yml

@@ -19,6 +19,9 @@ keywords:
   - secrets
   - encryption
   - security
+annotations:
+  headlamp/plugin/archive-url: https://github.com/cpfarhood/headlamp-sealed-secrets-plugin/releases/download/v0.2.0/headlamp-sealed-secrets-0.2.0.tar.gz
+  headlamp/plugin/archive-checksum: 55a1a387d65a8d92545033670d07dedd77a72fd228125331ab93136f8ac87f1c
 links:
   - name: Source Code
     url: https://github.com/cpfarhood/headlamp-sealed-secrets-plugin
@@ -72,4 +75,4 @@ maintainers:
 recommendations:
   - url: https://artifacthub.io/packages/helm/sealed-secrets/sealed-secrets
 provider:
-  name: <YOUR_NAME or ORGANIZATION>
+  name: cpfarhood