Circuits on the network tab

Does adding circuits to the interface sounds interesting?

```sh
sudo apt install -y python3-stem
sudo -u debian-tor tor-prompt
```
```py
for circ in controller.get_circuits():
  print "Cicruit %s, status: %s" % (circ.id, circ.status)
  for i, (fingerprint, nickname) in enumerate(circ.path):
    print " %i. %s (%s)" % (i + 1, fingerprint, nickname)
  print
```

