[WIP] Update to Python 3.11 and implement Poetry and ruff

[Copilot]

Thanks for assigning this issue to me. I'm starting to work on it and will keep this PR's description up to date as I form a plan and make progress.

Original prompt

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This section details on the original issue you should resolve

<issue_title>Non-standard repo</issue_title>
<issue_description>Needs upgrades to:

• Python 3.11
• Poetry rather than requirements for requirement management
• ruff replaces (pycodestyle, pylint, autopep8).

Can condense into a single Dockerfile (removing the variants). </issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Non-standard repo #7

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