Feature Request: HDMI-CEC support

```
I would like to request HDMI-CEC control support as part of SqueezeLite or as a
plugin for Logitech Media Server.

I use SqueezeLite on a Raspberry PI as part of SqueezePlug 6.02. I use HDMI to
connect my RPI to a HDMI-CEC capable receiver. LibCEC is a library available
for Raspberry PIs and PC that allows communications/control with other devices
on an HDMI network. Currently Raspbmc uses libCEC to allow seemless integration
of the Raspberry PI with connected TVs and receivers.

HDMI-CEC support in SqueezeLite could allow SqueezeLite to turn on/off with the
connected receiver/TV, the play/pause/arrow/enter/etc keys on the receiver/TV
remote to be transmitted to Squeezelite. When squeezelite is turned on via an
android app, it could turn the receiver and select the correct source. In short
SqueezeLite/RPI would be an integral part of a hometheater system as if it was
a factory feature.

I'm not much of a Linux programmer but have dabbled with controlling HDMI-CEC
through bash scripts. If this feature is of interest I could offer my help
mapping the HDMI-CEC command strings as well as testing the integration.

Thanks!

```

Original issue reported on code.google.com by `Warpsh...@gmail.com` on 6 Dec 2013 at 2:57