Join to template, adding python 3.12 support

[pacrob]

Bringing the joy and wonder of the python project template to web3! (finally)

Main change is adding python 3.12 testing. Otherwise, most updates are structural to bring things in line with the template.

Todo:

• [x] Clean up commit history
• [x] Add or update documentation related to these changes
• [x] Add entry to the release notes

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