Install Python tools with curl or powershell

The Astral folks have made it even easier to install Python tools. All you need to do is just run a single curl or powershell command. For example, install ruff with "curl -LsSf uvx.sh/ruff/install.sh | sh" and that's it. You can also do "uv tool install" but uvx.sh provides another option if uv isn't available on your machine.