loongson/pypi: links for echo-api

loongson/mirror echo_api-1.0.7.dev0.tar.gz
loongson/mirror echo_api-1.0.6.dev0.tar.gz
loongson/mirror echo_api-1.0.5.dev0.tar.gz
loongson/mirror echo_api-1.0.3.dev0.tar.gz
loongson/mirror echo_api-1.0.0.dev0.tar.gz