Add PubNub MCP Server to Official Integration List

[stephenlb]

Description

Server Details

• Server: Node using "@modelcontextprotocol/sdk": "^1.10.2"
• Changes to: adds tools to load documentation and a tool to send a message.

Motivation and Context

To add latest SDK documentation context to the LLMs and to provide tools for testing APIs.

How Has This Been Tested?

Claude Desktop

Cursor IDE

Breaking Changes

None

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: Claude and Cursor
• My code follows the repository's style guidelines
• New and existing tests pass locally npm test
• I have added appropriate error handling
• I have documented all environment variables and configuration options

Additional context

[olaservo]

Thanks for your contribution to the servers list. This has been merged in this combined PR: #2075

This is a new process we're trying out, so if you see any issues feel free to re-open the PR and tag me.