mv src/pyrobird to pyrobird

[veprbl]

I believe, "src" is not a python thing anyways.

Resolves: #27

[DraTeots]

I believe hatch creates src when you make a new project novadays. But I never saw a value in it, other than probably it is a good practice since it is created by default. But since it is causing problems and the easiest solution to remove it - lets remove it.

[veprbl]

I'm surprised. Here is a project created by hatch, with no src: https://github.com/eic/epic-capybara/tree/main