Allow skipping dependency installation when running develop

[asoc]

The project I'm working is currently made up of several pure python packages and then a Rust/Python hybrid package. The pure packages are defined as dependencies in pyproject.toml that point to their respective BitBucket repositories but they are installed in editable mode as I'm constantly adjusting them as I work on the hybrid package. When I make changes in the Rust code base, running maturin develop replaces my editable installations with non-editable builds from source. I then have to re-pip install -e those packages.

It would be super convenient to have something similar to pip install --no-deps added to maturin develop, or have --skip-install also skip the dependencies.