loongson/pypi: links for plaid-stubs

loongson/mirror plaid-stubs-0.4.1.tar.gz
loongson/mirror plaid-stubs-0.4.tar.gz
loongson/mirror plaid-stubs-0.3.tar.gz
loongson/mirror plaid-stubs-0.2.tar.gz
loongson/mirror plaid-stubs-0.1.tar.gz