loongson/pypi: links for openapi-ext-tools

loongson/mirror openapi-ext-tools-0.5.1.tar.gz
loongson/mirror openapi_ext_tools-0.5.1-py3-none-any.whl
loongson/mirror openapi-ext-tools-0.5.0.tar.gz
loongson/mirror openapi_ext_tools-0.5.0-py3-none-any.whl