loongson/pypi: links for isaacsim

loongson/mirror isaacsim-5.1.0.0.tar.gz
loongson/mirror isaacsim-5.0.0.0.tar.gz
loongson/mirror isaacsim-4.5.0.0.tar.gz
loongson/mirror isaacsim-4.2.0.2.tar.gz
loongson/mirror isaacsim-4.2.0.1.tar.gz
loongson/mirror isaacsim-4.1.0.0.tar.gz
loongson/mirror isaacsim-4.0.0.0.tar.gz