Restructure to be closer to a library crate

[Riceman2000]

I like this project and I think some people would use it as a dependency for some other Rust projects so it would be great to make it usable as a library.

Once these changes are pushed I would love to see it published to crates.io (and maybe renamed no offense lol). Windows is a mess and anything to make development better on it is awesome.

I removed some of the benchmarking but I intentionally separated out some functions so they could be benchmarked by Cargo in the future. Here are some docs on this but it is a Nightly feature right now https://doc.rust-lang.org/cargo/commands/cargo-bench.html

Things still left to do if anyone is feeling up to it:

• Add benchmarks
• Benchmark across some different optimization settings
• Write docs for the code -> https://doc.rust-lang.org/rust-by-example/meta/doc.html
• Examples/doctests for those looking at is as a library
• Decide the easiest way to execute this code
  • Currently I left it as

    use nmuidi::prelude::*;
    ...
    Cleaner::new("/test/path").clean()
    ...

  • It could be simpler if we change some things around but that could close the door on other functionality 🤷

Reference #2 for more commentary.

Thanks!

[Dillonb]

Hi, thanks for the contribution! I'll look at this when I have some time and get it merged.

[Riceman2000]

Awesome, thanks! Let me know if there are any changes you'd like to see

[lowercasebtw]

Any news?

[brasky]

Apologies for the delay! I've been looking through the changes (while learning Rust so please forgive me) and I think it looks great.

I ran a test against the same workload in my video (my fast build cache) and it ran well.

And you even added tests, thanks a lot!