Hard implementation of uv

[ChRen95]

So the idea of providing a template is very good but I kinda dislike the fact that uv is hard coded.
We could simply provide a requirements.txt or similar so were free to use whatever we want.
I think most people still use pipenv, so we should leave this open and then one can work with whatever works for one respected.

[axtimhaus]

Uv follows the pyproject.toml standards, so the current setup (except the lock file) can be used with other tools as well (but not poetry or pipenv, which have their own format).
I will add a comment which tools would work.