Add ls alias to uv {tool, python, pip} list

[unexge]

Summary

This PR adds ls alias to uv {tool, python, pip} list for convenience.

Not sure if folks previously discussed this or have any opinion on having aliases – but I have a muscle memory for ls for listing things in commands I'm using (like docker images ls, zellij ls, helm ls etc.) and thought having ls alias for list command would be useful.

Test Plan

I simply compiled uv and manually checked ./target/release/uv {tool, python, pip} ls.