pythonPackages.aiolifx-effects: init at 0.2.1

Aiolifx_effects package extends the pythonPackages.aiolifx package to
provide the ability to program effects (strobe, fade) into lifx light
fixtures (https://www.lifx.com) using python. The original need was to
use it with the home-assistant package, specifically the "lifx"
component. Although not strictly required to control the lights, the
lifx compopent imports this package and will fail if it's not present.