loongson/pypi: links for py-shelf

loongson/mirror py_shelf-3.0.6.tar.gz
loongson/mirror py_shelf-3.0.5.tar.gz
loongson/mirror py_shelf-3.0.4.tar.gz
loongson/mirror py_shelf-3.0.3.tar.gz
loongson/mirror py_shelf-3.0.2.tar.gz
loongson/mirror py_shelf-3.0.1.tar.gz
loongson/mirror py_shelf-3.tar.gz
loongson/mirror py_shelf-2.2.8.tar.gz