如何安装safari的插件

 https://support.apple.com/en-us/HT203051

https://developer.apple.com/safari/extensions/

https://discussions.apple.com/thread/252183294

https://github.com/aidancornelius/EZProxy-Safari-App-Extension

https://proxy-seller.com/blog/setup_a_proxy_for_safari_and_mac_os

https://brakertech.com/safari-proxy-howto/