loongson/mirror: links for metashade

loongson/mirror metashade-0.6.0.tar.gz
loongson/mirror metashade-0.6.0-py3-none-any.whl
loongson/mirror metashade-0.6.0a2.tar.gz
loongson/mirror metashade-0.6.0a2-py3-none-any.whl
loongson/mirror metashade-0.6.0a1.tar.gz
loongson/mirror metashade-0.6.0a1-py3-none-any.whl