[naoqieus] add led fading method

[kochigami]

• methods for fading leds through euslisp
• requires
  [naoqi_apps] add node and launch for ALLeds (wip) ros-naoqi/naoqi_bridge#84
  add msg and srv for naoqi_leds ros-naoqi/naoqi_bridge_msgs#33
• now only handling
  fadeRGB http://doc.aldebaran.com/2-5/naoqi/sensors/alleds-api.html#alledsproxy-fadergb2
  reset http://doc.aldebaran.com/2-5/naoqi/sensors/alleds-api.html#ALLedsProxy::reset__ssCR

how to use

1.irteusgl$ pepper-init 
(:robot #<metaclass #X6c8b298 pepper-robot> :naoqi-namespace "pepper_robot" :dcm-namespace "pepper_dcm")
nil
2.irteusgl$ send *ri* :get-led-color-name
:white, :red, :green, :blue, :yellow, :magenta, :cyannil
3.irteusgl$ send *ri* :fade-led-with-color-name :cyan
t ;; pepper's eye led changed to cyan from white
4.irteusgl$ send *ri* :reset-led
t ;; pepper's eye led changed to white

[kochigami]

I think using #999 is better because this PR requires us to launch naoqi_apps. #999 requires only naoqi_driver, so I close this.