ci: using uv to setup python and install dependencies for github actions

[timurcarstensen]

changes

• uses uv for venv and installing dependencies in our github actions workflows
• switches to PEP 621 for pyproject.toml and discards of poetry

todo

• update docs
• update other workflows
• Add a uv build line to the contributing docs for the publishing part

[eddiebergman]

Seems good at a glance although you've have to update the documentation/contributing guide as well. I recommend searching up for the string "poetry" to find sources of it.

[eddiebergman]

Generally big fan, just want to check that pyproject.toml gets updated to remove peotry?

Also would mean poetry publish would cease to work