Merge #123

123: Added clippy to the CI workflow r=almindor a=romancardenas

I've been working with this crate for a while and noticed that it didn't include clippy as part of the CI process. This PR checks that clippy does not trigger any warning for new contributions. I also ran `cargo clippy --fix` to "fix" the crate.

If you think this is useful, I can adapt other repos (e.g., riscv-rt or e310x). Cheers!

Co-authored-by: Román Cárdenas <rcardenas.rod@gmail.com>