linux fallback for copy-to-clipboard suing xsel

[extrawurst]

thanks to @cruessler we now can use copy-to-clipboard on linux.

but if your linux does not have xclip installed we do not try any fallback like xsel. we should do that and then have an error msg listing which ones we try.

[denismaxim0v]

I'd like to have a try on this if it's still for takes

[extrawurst]

@denismaxim0v absolutely - go for it :)