loongson/pypi: links for capnp-stub-gen

loongson/mirror capnp_stub_gen-0.1.3.tar.gz
loongson/mirror capnp_stub_gen-0.1.3-py3-none-any.whl
loongson/mirror capnp_stub_gen-0.1.1.tar.gz
loongson/mirror capnp_stub_gen-0.1.1-py3-none-any.whl
loongson/mirror capnp_stub_gen-0.1.0.tar.gz
loongson/mirror capnp_stub_gen-0.1.0-py3-none-any.whl