loongson/pypi: links for collective-ptg-unitegallery

loongson/mirror collective.ptg.unitegallery-1.0b1.tar.gz
loongson/mirror collective.ptg.unitegallery-1.0a4.tar.gz
loongson/mirror collective.ptg.unitegallery-1.0a3.tar.gz
loongson/mirror collective.ptg.unitegallery-1.0a2.tar.gz
loongson/mirror collective.ptg.unitegallery-1.0a1.tar.gz