Add Markdownify MCP Server to List

[zcaceres]

Adds an MCP server markdownify that converts a variety of files to Markdown. More or less a wrapper around Microsoft's markitdown

Motivation and Context

Markdown is friendly to LLM-based workflows. So it's useful to have a "universal" markdown converted in an Agent's toolbox.

How Has This Been Tested?

I've tested each tool locally with Claude desktop. I intend to add unit tests on the core Markdownify class soon.

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
• 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