For automate proxy and socks before i tryed foxyproxy (very very hard) after i tried other addons and a simple solution is this
This need to click icon in browser (kantu xclick) and open unique page setting with xtype i set proxy number and port, proxy type and save.
With this addons is simple because you have all setting in 1 popunder opended clicking on the icon.
I have in csv list of proxy and type (http, https, socks4, sock5) and working well.
Need to use desktop automation and few image to recognize button in extension.
I tried with foxyproxy and it’s to hard to automate.