Add Google Calendar MCP to the Community Servers list

[nspady]

Description

This PR introduces a new MCP server for Google Calendar integration. The server provides a standardized interface for LLMs to interact with Google Calendar, enabling capabilities like reading, creating, deleting, and managing calendar events.

Server Details

• Server: google-calendar

Motivation and Context

This server enables LLMs to interact with Google Calendar through the MCP protocol, allowing them to manage calendar events programmatically. This fills a gap in calendar management capabilities for LLM clients.

How Has This Been Tested?

Yes, I have tested this extensively with Claude desktop and have had a few friends try it as well.

Breaking Changes

No breaking changes as this is a new server implementation.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)

Checklist

• I have read the MCP Protocol Documentation
• My changes follows MCP security best practices
• I have updated the server's README accordingly
• I have tested this with an LLM client
• My code follows the repository's style guidelines
• New and existing tests pass locally
• I have added appropriate error handling
• I have documented all environment variables and configuration options

Additional context

The server requires creating or modifying a Google Cloud app to enable calendar API functionality. It requires completing the OAuth flow and was structured to be as similar in steps as possible to the existing google-drive server. It uses TypeScript and follows MCP best practices for tool implementation and error handling.