Rollup merge of #125638 - Oneirical:lets-find-some-tests, r=jieyouxu

Rewrite `lto-smoke`, `simple-rlib` and `mixing-deps` `run-make` tests in `rmake.rs` format

Part of #121876 and the associated [Google Summer of Code project](https://blog.rust-lang.org/2024/05/01/gsoc-2024-selected-projects.html).

Author: jieyouxu