feature - add UV

[JSimmsDev]

This pull request migrates the Python environment management workflow from pyenv to the much faster and simpler uv tool. It updates the CLI commands, refactors the setup and removal logic, and revises the documentation to reflect this new approach. The changes streamline developer onboarding and workspace management, making Python environment handling more reliable and efficient.

Documentation and Workflow Updates:

• Updated README.md to document the new UV-based workflow, including installation steps, environment creation, and migration instructions from pyenv. [1] [2]

CLI Command Changes:

• Replaced the pyenv-install command with a new uv-install command in the CLI, and updated the corresponding handler to install UV via Homebrew or the official script. [1] [2]

Python Environment Management:

• Refactored the environment setup logic in python_setup to use uv for Python installation, virtual environment creation, requirements installation, and pre-commit setup, replacing all previous pyenv/virtualenv logic.
• Updated the environment removal logic to delete the .venv directory and clean up .python-version if present, removing all pyenv-specific commands.

[kthhrv]

Suggested change

	sudo pip3 install git+https://github.com/timeoutdigital/timeout-tools
	uv tool install git+https://github.com/timeoutdigital/timeout-tools

?

[kthhrv]

testing locally

$ uv tool install git+https://github.com/timeoutdigital/timeout-tools@feature-add-uv

[kthhrv]

chicken and the egg, use timeout-tools to install UV or use UV to install timeout-tools :)

[kthhrv]

need a solution for activating .venv when you cd in to a ws