loongson/pypi: links for sdf4sim

loongson/mirror sdf4sim-0.6.0.tar.gz
loongson/mirror sdf4sim-0.5.0.tar.gz
loongson/mirror sdf4sim-0.4.0.tar.gz
loongson/mirror sdf4sim-0.3.0.tar.gz
loongson/mirror sdf4sim-0.2.0.tar.gz
loongson/mirror sdf4sim-0.1.1.tar.gz
loongson/mirror sdf4sim-0.1.0.tar.gz