loongson/pypi: links for iftech-ethereum-etl

loongson/mirror iftech-ethereum-etl-3.1.0.tar.gz
loongson/mirror iftech-ethereum-etl-3.0.3.tar.gz
loongson/mirror iftech-ethereum-etl-3.0.2.tar.gz
loongson/mirror iftech-ethereum-etl-3.0.0.tar.gz