Add Fabi MCP to Community Servers

[ltang]

Description

This PR adds Fabi-MCP to the Community Servers README.

Motivation and Context

Fabi MCP makes it easy for Claude Desktop and AI agents to access sophisticated data analysis capabilities like:

• Natural language to SQL/Python code generation with semantic understanding
• Autonomous schema discovery using RAG
• Safe query execution with error handling
• Dashboard creation and result visualization
• Connected data navigation across tables and databases

This gives users a smooth way to bring AI-powered data analysis into their agentic workflows.

How Has This Been Tested?

Tested with:

• Claude
• ChatGPT
• Agent Kit
• Cursor
• n8n
• Local coding agent

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)
• Documentation update

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

• Fabi MCP server supports both token based auth and Oauth
• Documentation: https://docs.fabi.ai/advanced_features_and_dev_tools/mcp_server
• Fabi app: https://app.fabi.ai