Added Podbean MCP server listing to README

[amurshak]

Description

Added a Podbean MCP server listing to the README.

Server Details

• Server:
• Changes to:

Motivation and Context

This provides a link to an MCP server for interfacing with the Podbean API, enabling podcasters to update, query, delete, and get analytics for their podcasts through MCP.

How Has This Been Tested?

Yes, I've tested all tools and functionality through the Claude Desktop client.

Breaking Changes

N/A

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)
• [x] Documentation update

Checklist

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

Additional context