loongson/pypi: links for sumup-sr-client

loongson/mirror sumup_sr_client-0.4.0.tar.gz
loongson/mirror sumup_sr_client-0.3.0.tar.gz
loongson/mirror sumup_sr_client-0.2.0.tar.gz
loongson/mirror sumup_sr_client-0.1.0.tar.gz