Format Site fields (e.g. when snooping)

```sh-session
$ lifx-snoop
DATA: length=88
      000  58 00 00 54 00 00 00 00  d0 73 d5 00 fb b0 00 00  |X..T.....s......|
      010  4c 49 46 58 56 32 00 00  00 00 00 00 00 00 00 00  |LIFXV2..........|
      020  6b 00 00 00 0a 16 32 33  ff ff ac 0d 00 00 ff ff  |k.....23........|
      030  f0 9f 93 9a 00 00 00 00  00 00 00 00 00 00 00 00  |................|
      040  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
      050  01 00 00 00 00 00 00 00                           |........|
MSG:  &{Version:1024 Target:[208 115 213 0 251 176 0 0] Site:LIFXV2 AtTime:0 Addressable:true Tagged:false Acknowledge:false}
      *payloads.LightState &{Color:{Hue:5642 Saturation:13106 Brightness:65535 Kelvin:3500} Dim:0 Power:65535 Label:📚 Tags:1}
```

Note the `Site:LIFXV2` instead of opaque byte array.