Function use_tree_cmp 

pub(super) fn use_tree_cmp(a: &UseTree, b: &UseTree) -> Ordering

Orders use trees following rustfmt’s version sorting algorithm for ordering imports.

Example: foo::{self, Baz, FOO_BAZ, Qux, baz, foo, *, {Bar}}

Ref:

• https://doc.rust-lang.org/style-guide/index.html#sorting
• https://doc.rust-lang.org/edition-guide/rust-2024/rustfmt.html