Provides a struct [`Url`] to decompose the url into a set of string slice. 
Some utilities functions are also provided.

# Motivation

You can notice this crate is very similar to the [url crate]. That's right : 
url-decompose almost does the same thing. 

As I started to make this crate, I didn't know the existance of "url" so I went to 
URI RFC to make my own implementation (using a regex). When I discover "url" crate, 
I decided to keep on my crate for some reasons :

### My Url\<S\> can either own the data

Url store the value/reference which its type implements `AsRef<str>`. So Url can store a String (so Url owns the string) or &str (so Url keeps a reference to 
another String) or whatever implements `AsRef<str>`. 

### This crate is light

As I'm writing, there is 2 files 400 lines in totale, and needs 3 dependencies. 
Of course, the crate should evolve to something better in parsing, but it'll
still remain light.

[url crate]: https://crates.io/crates/url
[RFC 3986]: https://datatracker.ietf.org/doc/html/rfc3986