loongson/pypi: links for rtctree-aist

loongson/mirror rtctree_aist-4.2.5.tar.gz
loongson/mirror rtctree_aist-4.2.5-py3-none-any.whl
loongson/mirror rtctree_aist-4.2.4.tar.gz
loongson/mirror rtctree-aist-4.2.3.tar.gz
loongson/mirror rtctree-aist-4.2.2.tar.gz
loongson/mirror rtctree-aist-4.2.0.tar.gz