loongson/mirror: links for streamviz

loongson/mirror streamviz-5.1.tar.gz
loongson/mirror streamviz-5.1-py2.py3-none-any.whl
loongson/mirror streamviz-5.0.tar.gz
loongson/mirror streamviz-5.0-py2.py3-none-any.whl
loongson/mirror streamviz-4.0.tar.gz
loongson/mirror streamviz-4.0-py2.py3-none-any.whl
loongson/mirror streamviz-3.0.tar.gz
loongson/mirror streamviz-3.0-py2.py3-none-any.whl