loongson/mirror: links for emqx-extension-sdk

loongson/mirror emqx-extension-sdk-0.2.tar.gz
loongson/mirror emqx_extension_sdk-0.2-py3.6.egg
loongson/mirror emqx_extension_sdk-0.2-py2-none-any.whl
loongson/mirror emqx-extension-sdk-0.1.tar.gz