Could we change the Rust fmt configuration for import collapsing?

[ErisianArchitect]

If you're not sure what I mean by import collapsing, I'm talking about how use statements can go from

use core::{
    ptr::{
        NonNull,
    },
};

into

use core::ptr::NonNull;

This is also what causes the llvm-sys imports to form a large block that is harder to read, and harder to update.
I was thinking it would be much nicer if we turned this behavior off, or changed the behavior, since we work with a lot of imports. While working on orc2, I'm getting frustrated by that mechanism because I like to keep my use statements in a way that makes them easy to modify, but the collapsed version is much more difficult to modify, especially since I often have to add in braces when they are removed.

Alternative:

I could also just add rust_fmt::skip to my use statements until I'm ready to make a PR, but then I might forget to remove those attributes.