Add Claude Code Plugin / Marketplace #161
Description
To aide distribution, it would help to enable your MCP server to be installed to Claude Code via the plugin system.
See Docker's example - the key being the marketplace.json file. This tells Claude that you have "plugins", and how to install the MCP server.
To further this, list your marketplace/plugin on https://claudecodemarketplace.com (once your repository has a marketplace.json file, list it here (https://github.com/joesaunderson/claude-code-marketplace/blob/main/.claude-plugin/marketplaces.json), and it will automatically be discovered to thousands of users.