gituser/pypi: links for openswitcher-proxy

gituser/pypi openswitcher_proxy-0.12.3-py3-none-any.whl
gituser/pypi openswitcher_proxy-0.12.2.tar.gz
gituser/pypi openswitcher_proxy-0.12.1.tar.gz
gituser/pypi openswitcher_proxy-0.12.0.tar.gz