add proof of agent plugin

[chzyer]

Registry Update Checklist

Registry:

• I've made the organization @eliza-plugins
• I've used github not github.com
• There is no .git extension
• It's placed it alphabetically in the list
• I've dealt with commas properly so the list is still valid JSON

If not an eliza-plugins official repo, i.e. new plugin:

The plugin repo has:

• is publically accessible (not a private repo)
• uses main as it's default branch
• I have include elizaos-plugins in the topics in the GitHub repo settings. If the plugin is related to AI or crypto, please add those as topics as well.
• add simple description in github repo
• follows this convention

plugin-name/
├── images/
│   ├── logo.jpg        # Plugin branding logo
│   ├── banner.jpg      # Plugin banner image
├── src/
│   ├── index.ts        # Main plugin entry point
│   ├── actions/        # Plugin-specific actions
│   ├── clients/        # Client implementations
│   ├── adapters/       # Adapter implementations
│   └── types.ts        # Type definitions
│   └── environment.ts  # runtime.getSetting, zod validation
├── package.json        # Plugin dependencies
└── README.md          # Plugin documentation

• an images/banner.jpg and images/logo.jpg and they
  • Use clear, high-resolution images
  • Keep file sizes optimized (< 500KB for logos, < 1MB for banners)
  • Follow the elizaOS Brand Guidelines
  • Include alt text for accessibility
• package.json has a agentConfig like the following

{
  "name": "@elizaos/plugin-example",
  "version": "1.0.0",
  "agentConfig": {
    "pluginType": "elizaos:plugin:1.0.0",
    "pluginParameters": {
      "API_KEY": {
        "type": "string",
        "description": "API key for the service"
      }
    }
  }
}