loongson/pypi: links for chirpsounder

loongson/mirror ChirpSounder-2.0.4.tar.gz
loongson/mirror ChirpSounder-2.0.3.tar.gz
loongson/mirror ChirpSounder-2.0.2.tar.gz
loongson/mirror ChirpSounder-2.0.1.tar.gz