loongson/pypi: links for pyengine-3d

loongson/mirror PyEngine_3D-3.1.2.tar.gz
loongson/mirror PyEngine-3D-3.1.1.tar.gz
loongson/mirror PyEngine-3D-3.1.tar.gz
loongson/mirror PyEngine_3D-3.1-py3-none-any.whl