loongson/pypi: links for btok

loongson/mirror btok-0.3.tar.gz
loongson/mirror btok-0.3-py3-none-any.whl
loongson/mirror btok-0.2.tar.gz
loongson/mirror btok-0.2-py3-none-any.whl
loongson/mirror btok-0.1.tar.gz
loongson/mirror btok-0.1-py3-none-any.whl