loongson/mirror: links for plutoplot

loongson/mirror plutoplot-0.3.2.tar.gz
loongson/mirror plutoplot-0.3.2-py3-none-any.whl
loongson/mirror plutoplot-0.3.1.tar.gz
loongson/mirror plutoplot-0.3.1-py3-none-any.whl