feat: allow configuring pypi insecure host

[zen-xu]

close #1982

[ruben-arts]

This looks good to me, @tdejager could you review this?

[tdejager]

Thanks @zen-xu for the PR! The Implementation looks fine, the question for me would be if we want uv_configuration as a dependency because then we can never publish this specific crate, otherwise we need to define the type and conversion ourselves. Personally, I'd be for that.
cc @ruben-arts @baszalmstra