loongson/pypi: links for techlib-nr-common-metadata

loongson/mirror techlib-nr-common-metadata-3.0.0a49.tar.gz
loongson/mirror techlib_nr_common_metadata-3.0.0a49-py3-none-any.whl
loongson/mirror techlib-nr-common-metadata-3.0.0a48.tar.gz
loongson/mirror techlib_nr_common_metadata-3.0.0a48-py3-none-any.whl
loongson/mirror techlib-nr-common-metadata-3.0.0a47.tar.gz
loongson/mirror techlib_nr_common_metadata-3.0.0a47-py3-none-any.whl