adds setup.py based on pyproject (#32)
adds setup.py based on pyproject (#32)

Co-authored-by: Jae H. Yoo <e2ea7ccc185a5431b621026cac0e50b0badf78ca@users.noreply.github.com>
Co-authored-by: Antonio Martinez <fb111623e164c2cb22b10edf12e630cdac99ec14@gmail.com>
google/qhbm-library,google/qhbm-library