We should aim for a solution with sane defaults that work as most users
would expect it.
The current default leads to a cache that is never invalidated and thus
never updated.
This also mirrors the default behaviors for setup-python which use
`**/requirements.txt`, `**/Pipfile.lock` or `**/poetry.lock`
Also make it clear that the uv cache on the filesystem can be uploaded to the GitHub Actions cache, but they are distinct things.
Also make it clear that the local cache path can be changed without using `enable-cache: true`
Closes: #40
Because of build conflics (forgot to run `npm i` after pulling) I
deleted the `dist`folder to start fresh. Turns out that it still
contained the source maps from the very first commit. I removed the
argument to generate those a long time ago