loongson/pypi: links for itoolbox

loongson/mirror iToolBox-0.0.5.tar.gz
loongson/mirror iToolBox-0.0.5-py3-none-any.whl
loongson/mirror iToolBox-0.0.3.tar.gz
loongson/mirror iToolBox-0.0.3-py3-none-any.whl