loongson/pypi: links for pcr-python

loongson/mirror pcr_python-2025.4.4.1a0.tar.gz
loongson/mirror pcr_python-2025.4.4.1a0-py3-none-any.whl
loongson/mirror pcr_python-2025.3.30.1a0.tar.gz
loongson/mirror pcr_python-2025.3.30.1a0-py3-none-any.whl