Add contributors mcp

[Isaac-Flath]

Warning

This PR is not ready for review

Description

This is an experimental PR, to give a local MCP server for contributors to use that gives:

• Useful prompts for using AI when contributing, such as code quality prompts or reviewing PR size prompts
• Tools for testing, such as scoped playwright tools to use against example apps.

I need to complete the following things need to be done before it's moved out of draft.

• Code review and cleanup
• Real world usage for testing and improvement of prompts
• Documentation on how to use with github copilot

Pull request type

Please check the type of change your PR introduces:

• Bugfix
• New feature
• Refactoring (no functional changes, no api changes)
• Build related changes
• Documentation content changes
• Other (please describe):

Pull request tasks

The following have been completed for this task:

• Code changes
• Documentation changes for new or changed features
• Alterations of behavior come with a working implementation in the examples folder
• Tests on new or altered behaviors

Demo or screenshot

Checklist

• I have run just test and just qa, ensuring my code changes passes all existing tests
• I have performed a self-review of my own code
• I have ensured that there are tests to cover my changes

Other information

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

📢 Thoughts on this report? Let us know!

[Isaac-Flath]

It's been handing open, so closing for now. Still a good idea I think. If someone sees this and want to pick it up feel frree!