Nanoleaf Aurora improvements/enhancements

[peternewman]

Leftover from #1348 .

Still todo/future features:

• Enable streaming mode
• Populate panel IDs automatically
• Populate streaming port automatically
• Starting offset (each unit is only a max of 30 channels) and/or RDM patching (per controller or per panel)
• Pass panel vector as part of SendDMX call, so we only need one Node
• Work out if we need to bother with Rx/binding to the socket
• Consider a TokenBucket to manage Tx speed

Almost all of this needs some HTTP/JSON integration, so we probably need to use libcurl or something...

[peternewman]

For workarounds for the config stuff for now, see https://groups.google.com/d/topic/open-lighting/8FApsGOEZGg/discussion .

[peternewman]

See also #1485

[peternewman]

Firmware 3.2.0 seems to have panel IDs in a more logical order, and the seemingly unique number is now "o" in the JSON, actually that might just be orientation.

[peternewman]

See for example https://github.com/hyperion-project/hyperion.ng/blob/master/libsrc/leddevice/dev_net/LedDeviceNanoleaf.cpp