loongson/mirror: links for pystcstego

loongson/mirror pystcstego-0.1.0.tar.gz
loongson/mirror pystcstego-0.1.0-cp312-cp312-manylinux2014_x86_64.whl
loongson/mirror pystcstego-0.1.0-cp311-cp311-win_amd64.whl