Provide a way to redirect through ssh via a file unix socket

[svalat]

Make such MALT webview listen on a local file unix socket so we do not open a port and keep private safety to the user.

We need to provide a small program listening to the socket, redirecting by pipe to ssh and on the client side a way to open a listening port and offer via the given net soket access to the remote unix socket.

This way only the client workstation has a local port open which reduce the risk instead of opening a port remotely on remote cluster we are working on.

Some patches exist to have this capability directly in ssh but not merged (as far as I know).