Feature: Add an MCP entrypoint to easily allow any external AI agent (opencode, codex, claude code, etc.) to query/interact with LibreDesk

[lstep]

The goal is to allow remote AI agents to externally interact with libredesk (for example get all tickets from a specific client/inbox and generate some stats/excel/tables).

"Official" MCP server implementation in Go is at https://github.com/modelcontextprotocol/go-sdk