feat: Add Model Context Protocol (MCP) Server Implementation

[pipaber]

Summary

This pull request introduces a Python-based server implementation for the Model Context Protocol (MCP). The primary goal of this addition is to extend the interoperability of the pointblank package, allowing it to communicate with and validate data contexts from Python environments.

This contribution is fully contained within a new mcp_folder, which includes the server logic, comprehensive unit tests, and documentation.

The main changes are:

• Addition of a new mcp_folder (not sure where to put this implementation) containing the following files:

• pointblank_server.py: The core MCP server that implements the MCP endpoints (for now just stdio but can be adapted to FastAPI as mcp python SDK shows on their docs.). It's designed to receive requests from a llm agent and return model-related context and validations.

• test_mcp_server.py: A suite of pytest unit tests to ensure the server's functionality is correct and robust.

• readme.md: Documentation explaining the purpose of the MCP server, how to set it up, and how to run it.

Related GitHub Issues and PRs

• Ref: # N/A

Checklist

• I understand and agree to the Code of Conduct.
• I have followed the Style Guide for Python Code as best as possible for the submitted code.
• I have added pytest unit tests for any new functionality.

[rich-iannone]

Thanks for submitting this PR and sorry it took awhile to acknowledge it. I'm going to review it shortly and provide some detailed comments for changes. Thanks again for the contribution and for your patience here!

[rich-iannone]

In terms of changes I'd prefer right now (and this is before a more thorough review):

• use fastmcp (relevant quickstart: https://gofastmcp.com/servers/server) instead of mcp
• let's not generate images of validation report tables, so remove the .png producing pathway and drop the selenium and pillow dependencies
• place the tests in the tests directory (example of a project doing this: https://github.com/isekOS/ISEK/blob/main/tests/test_fastmcp.py)

There's definitely more to change but I think these three things alone will get us off to a better start!

[pipaber]

Hi @rich-iannone, great! I'll start doing these changes.