Battery status plugin

[abgit]

Use case

On some apps would be great to alert user that their device has low battery (because, user is on a critical journey)

Idea

We just need a native plugin that access device battery status and emits an event if battery is low, like cordova-plugin-battery-status does (https://github.com/apache/cordova-plugin-battery-status).

This way, a very simple bubble event could be implemented:

window.addEventListener("batterystatus", onBatteryStatus, false);
function onBatteryStatus(status) {
    instance.publishState( "batterylevel", status.level );
    instance.triggerEvent( "batterylow" ); 
}