Add IPLocate MCP server

[iplocate-dev]

Description

Adds the official IPLocate MCP Server to README.md.

This server provides tools to look up IP address geolocation, network information, detect proxies and VPNs, and find abuse contact details using the IPLocate.io API.

Server Details

• Server: IPLocate MCP server (https://github.com/iplocate/mcp-server-iplocate)
• Changes to: README.md (adds this server to the list)

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
• New and existing tests pass locally
• I have added appropriate error handling
• I have documented all environment variables and configuration options

Additional context