Bring the Python Version update docs into the main repo

[jrmccluskey]

Move relevant documentation for adding/removing Python versions from the Confluence wiki page into the main repository. Also updates the content slightly.

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[gemini-code-assist]

Summary of Changes

Hello @jrmccluskey, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request centralizes critical project documentation by migrating the guidelines for managing Python versions from an external Confluence wiki to a new markdown file directly within the repository. This change improves the discoverability and maintainability of these instructions, ensuring that contributors have a clear, up-to-date reference for integrating new Python versions or deprecating old ones, thereby streamlining the development process and reducing reliance on external knowledge bases.

Highlights

• Documentation Migration: The documentation for adding and removing Python versions has been moved from the Confluence wiki into a new markdown file within the main repository, making it more accessible and co-located with the codebase.
• Content Update: The migrated documentation content has been slightly updated to ensure accuracy and relevance.

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[jrmccluskey]

@gemini-code-assist review

[gemini-code-assist]

Code Review

This pull request migrates documentation for adding and removing Python versions from a Confluence wiki page into the main repository. The new documentation is comprehensive and well-structured. My review includes suggestions to fix a few typos, improve formatting consistency, and update links to point to the master branch instead of specific commit hashes to prevent them from becoming stale. These changes will enhance the clarity and maintainability of the document.

[github-actions]

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R: @shunping added as fallback since no labels match configuration

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[shunping]

LGTM! Thanks for documenting this and sharing the knowledge.