More protocol commands

These seem to be the other commands used in the protocol. These don't seem to be currently implemented in the client (yet).

```
AT*REF=%d,%d
AT*PMODE=%d,%d
AT*MISC=%d,%d,%d,%d,%d
AT*GAIN=%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d
AT*ANIM=%d,%d,%d
AT*VISP=%d,%d,%d,%d,%d,%d,%d,%d,%d,%d
AT*VISO=%d,%d
AT*CAP=%d,%d,%d
AT*ZAP=%d,%d
AT*CAD=%d,%d,%d
AT*FTRIM=%d
AT*MTRIM=%d,%d,%d,%d
AT*POL=%d,%d,%d,%d,%d,%d
AT*PCMD=%d,%d,%d,%d,%d,%d
AT*PCMD_MAG=%d,%d,%d,%d,%d,%d,%d,%d
AT*CONFIG=%d,"%s","%s"
AT*CONFIG_IDS=%d,"%s","%s","%s"
AT*CTRL=%d,%d,%d
AT*LED=%d,%d,%d,%d
AT*COMWDG=%d
AT*PWM=%d,%d,%d,%d,%d
AT*AFLIGHT=%d,%d
AT*CALIB=%d,%d
AT*VICON=%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d
```

Obviously, it will take some more work to figure each of these out, but this should be a good starting point based on `/bin/program.elf`.

This was from version `ardrone2_v2.3.3`.