Add structs & parsing for .whl file name

[Allstreamer]

Description

Create a Parser and relevant datastructures for the PEP-491 Wheel file-format naming convention.

the public facing API should look something like this:

use example_crate::example_struct;

let a = example_struct::new("django-1.0-1-py27-cp33m-linux_x86_64.whl");

println!("{}", a.distribution);
// > "django"

println!("{}", a.version);
// > You think of it, idk but probably pyver

println!("{}", a.build_tag);
// > Some(1)

println!("{}", a.python_tag);
// Some Enum idk

println!("{}", a.abi_tag);
// Some Enum idk

println!("{}", a.platform_tag);
// Some Enum idk

Checklist

• Did you do it john?

[John15321]

Remember that wheels are not the only package formats we have to support. Source distributions and possibly even eggs are gonna be needed