loongson/pypi: links for ucumos

loongson/mirror ucumos-0.8.4.tar.gz
loongson/mirror ucumos-0.8.4-py3-none-any.whl
loongson/mirror ucumos-0.8.3.tar.gz
loongson/mirror ucumos-0.8.3-py3-none-any.whl
loongson/mirror ucumos-0.8.2.tar.gz
loongson/mirror ucumos-0.8.2-py3-none-any.whl