[Feature Request] User can see a Network's rules

[laduke]

I don't like that when I join a network that I don't own, I don't know what Flow Rules are on that network. Actions like tee would be especially concerning.

The clients have the rules already; that's how the rules system works. Clients just need a way to output them to the terminal.

It looks like probably a pain to convert them back to json.

Rules (and tags and caps) JSON could be added to the listnetworks -j output, but that might be make that output annoyingly long. So a separate endpoint like /rules might be wanted. Either way.