Add poetry example

[rdmolony]

Description

Adds a poetry example

Motivation and Context

#419 was closed as conflicts weren't resolved, I've rebased on main & am happy to close it

How Has This Been Tested?

Are documentation examples tested?

Screenshots (if appropriate):

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 (add or update README or docs)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.