loongson/pypi: links for py-pkg-playground

loongson/mirror py-pkg-playground-0.3.0.tar.gz
loongson/mirror py_pkg_playground-0.3.0-py3-none-any.whl
loongson/mirror py-pkg-playground-0.2.3.tar.gz
loongson/mirror py_pkg_playground-0.2.3-py3-none-any.whl
loongson/mirror py-pkg-playground-0.1.0.tar.gz
loongson/mirror py_pkg_playground-0.1.0-py3-none-any.whl