loongson/pypi: links for snr-calc

loongson/mirror snr_calc-0.1.1.tar.gz
loongson/mirror snr_calc-0.1.1-py3-none-any.whl
loongson/mirror snr_calc-0.1.tar.gz
loongson/mirror snr_calc-0.1-py3-none-any.whl