Add `--bare` option to `uv init` (#11192)
People are looking for a less opinionated version of `uv init`. The goal
here is to create a `pyproject.toml` and nothing else. With the `--lib`
or `--package` flags, we'll still configure a build backend but we won't
create the source tree. This disables things like the default
`description`, author behavior, and VCS.
See
- https://github.com/astral-sh/uv/issues/8178
- https://github.com/astral-sh/uv/issues/7181
- https://github.com/astral-sh/uv/issues/6750
