rust-tests: run `cargo` tests inside the `rust` folder
There is no reason to only run inside the `rust/hg-cpython` folder, even if
the `cargo test --all` behavior ends up being the same.
rust-clippy: merge "revlog" module definition and struct implementation
Module inception is confusing when looking for code and almost never
the right choice.
rust-clippy: merge "config" module definition and struct implementation
Module inception is confusing when looking for code and almost never
the right choice.