loongson/pypi: links for pyang-arrcus-plugin

loongson/mirror pyang-arrcus-plugin-0.5.tar.gz
loongson/mirror pyang-arrcus-plugin-0.4.tar.gz
loongson/mirror pyang-arrcus-plugin-0.3.tar.gz
loongson/mirror pyang_arrcus_plugin-0.3-py3.8.egg
loongson/mirror pyang-arrcus-plugin-0.2.tar.gz
loongson/mirror pyang_arrcus_plugin-0.2-py3.8.egg
loongson/mirror pyang-arrcus-plugin-0.1.tar.gz