Consider moving away from setuptools

Consider switching to meson for building the Python extension along with meson-python.

https://github.com/mesonbuild/meson-python https://github.com/sdispater/pendulum/commit/42865d635f9bdf9cda61de9fc4d25e0568274867#diff-30d8f6be6320feeacf686be94f48c70869b52630e01ea625f0f15adc0d57c3e4R1