Add Guesty MCP Server to Third-Party Servers

[DLJRealty]

Summary

Adds Guesty MCP Server to the Third-Party Servers list.

• 38 tools covering reservations, guests, messaging, pricing, financials, calendars, reviews, tasks, and webhooks
• Published on npm: guesty-mcp-server (v0.4.3, 5 releases)
• First MCP server for Guesty, the leading property management platform
• Supports stdio and HTTP/SSE transports
• MIT licensed

This is the first MCP integration for the short-term rental / property management industry.

[olaservo]

Thanks for contributing to the MCP servers repo!

We've retired the third-party server list from the README in favor of the MCP Registry — see #3950 for context. The Official Integrations and Community Servers sections no longer exist in the README, so this PR no longer has a target.

Going forward, please publish your server to the MCP Registry using the quickstart guide:
https://github.com/modelcontextprotocol/registry/blob/main/docs/modelcontextprotocol-io/quickstart.mdx

That's where server discovery now happens. Thanks for building on MCP!

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Note: I'm working through the backlog with help from Claude Code to give everyone a prompt response.