loongson/pypi: links for pyvisionproductsearch

loongson/mirror pyvisionproductsearch-0.4.tar.gz
loongson/mirror pyvisionproductsearch-0.3.tar.gz
loongson/mirror pyvisionproductsearch-0.2.tar.gz
loongson/mirror pyvisionproductsearch-0.1.tar.gz