Add `uv python list --all-arches` (#9782)
With #9781 this becomes even more compelling. This is generally useful
as well.
e.g.,
```
❯ cargo run -- python list --all-arches
cpython-3.13.1+freethreaded-macos-x86_64-none <download available>
cpython-3.13.1-macos-x86_64-none <download available>
cpython-3.13.1+freethreaded-macos-aarch64-none <download available>
cpython-3.13.1-macos-aarch64-none <download available>
cpython-3.13.0-macos-aarch64-none /Users/zb/.local/bin/python3.13 -> /Users/zb/.local/share/uv/python/cpython-3.13.0-macos-aarch64-none/bin/python3.13
cpython-3.13.0-macos-aarch64-none /Users/zb/.local/bin/python3 -> /Users/zb/.local/share/uv/python/cpython-3.13.0-macos-aarch64-none/bin/python3.13
cpython-3.13.0-macos-aarch64-none /Users/zb/.local/bin/python -> /Users/zb/.local/share/uv/python/cpython-3.13.0-macos-aarch64-none/bin/python3.13
cpython-3.13.0-macos-aarch64-none /Users/zb/.local/share/uv/python/cpython-3.13.0-macos-aarch64-none/bin/python3.13
cpython-3.12.8-macos-x86_64-none <download available>
cpython-3.12.8-macos-aarch64-none <download available>
...
```
