Test TREXIO Python API with Numpy 2.0

[q-posev]

Following #160 - we should check if TREXIO Python API compilation is compatible with the recent release of Numpy 2.0 (major upgrade may require changes in the way we handle NumPy via SWIG).

TODO:

• Replace current numpy.i SWIG interface with the one from NumPy 2.0: https://github.com/numpy/numpy/blob/v2.0.0/tools/swig/numpy.i
• Install Numpy 2.0 in a virtual env
• Run make python-install and make python-test