root/pypi: links for x402-stacks

root/pypi x402_stacks-2.0.1.tar.gz
root/pypi x402_stacks-2.0.1-py3-none-any.whl
root/pypi x402_stacks-2.0.0.tar.gz
root/pypi x402_stacks-2.0.0-py3-none-any.whl