Integration of zuri inside http

[ducdetronquito]

Hi @Vexu !

Few days ago, I started a small library to bundle all HTTP core types for Zig into one place.
I really want to use zuri as the URI parser implementation so I had two choices:

• Use git submodules referencing your repository directly of eventually a fork of mine
• Include zuri's codebase directly

I found the latter to be the easiest one, but I wanted to have your approval on this before merging anything.

Here is a pull request that makes a plain copy of zuri, with the original license kept, and then adds minor changes for some unit tests.

At some point, when the package will be feature complete, I hope it could go back to the standard library or a dedicated organization depending on how the Zig community want to do things (cf: ziglang/zig#2007).

I am looking forward to your response; have a nice weekend 🌴

[Vexu]

• Include zuri's codebase directly

I'm OK with that, just beware that this might receive some extensive changes at some point since this was originally built on 0.4.0 and is also not very optimized.

[ducdetronquito]

Thanks !