chore: migrate from setup tools to hatchling

[Jo-Byr]

Migrate from setup tools to hatchling, related to #842

[jourdain]

We should move the src code under a ./src/ directory.

[Jo-Byr]

We should move the src code under a ./src/ directory.

So simply move the trame directory under a src folder without further modifications ?

[jourdain]

I think so, I mean you need to update the pyproject to reflect that.
You can look at https://github.com/Kitware/trame-common/blob/main/pyproject.toml just to make sure you see how the src directory is affecting the pyproject.

[jourdain]

Looks reasonable. Does it work when you run uv build?

[Jo-Byr]

Does it work when you run uv build?

Yes