Add Datadog MCP Server

[GeLi2001]

Description

Adds Datadog MCP server to README.

https://github.com/GeLi2001/datadog-mcp-server

Server Details

• Server:
• Changes to:

Motivation and Context

How Has This Been Tested?

Test it with Claude Desktop, tested:

Fetch all monitors (dummy data so no privacy issue on screenshot)

Breaking Changes

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

[GeLi2001]

@tadasant Could you please review this when you get a chance? Thanks!