loongson/pypi: links for pycopy-cpython-ucollections

loongson/mirror pycopy-cpython-ucollections-0.2.1.tar.gz
loongson/mirror pycopy-cpython-ucollections-0.2.tar.gz
loongson/mirror pycopy-cpython-ucollections-0.1.tar.gz
loongson/mirror pycopy-cpython-ucollections-0.0.tar.gz