Adding missing UI settings for ACN protocol

[gleeds]

I tried to test @ahodges9 's ACN (E1.31) addition, but it wasn't supported in the Board Manager UI and didn't have much luck configuring it manually in config.py. I was able to successfully use Systematic LED with a ESP8266 board and the ACN protocol after adding this code. I also added some documentation to the README.

[ahodges9]

Awesome, thanks for the update. I have actually been working on a completely new implementation that has full support for ACN. You should check it out https://github.com/ahodges9/LedFx

[gleeds]

@ahodges9 , I'll check it out.

I've only had it setup for a day or so, but the ESPixelStick firmware has been rock solid on my ESP8266, where as the firmware from this repo froze randomly all of the time and nothing I tried to debug it would help (different ESP, different LED strip, listening for crash dumps, adding debugging log messages). It's so much more of a pain to install on the ESP, but is worth it for the stability and support for multiple pieces of software.

[ahodges9]

Yeah I use ESPixelStick for all my devices and have 10+ nodes running flawlessly for to past few month. Has integration with HomeAssistant as well so I can easily have them function as standard lights as well. For LedFx the recommendation is to use ESPixelStick or WLED and I don't include any FW for this reason