Amazon Alexa support

Add actions for Amazon Alexa [speech recognition ](https://developer.amazon.com/de/docs/alexa-voice-service/speechrecognizer.html), so that the speech will translate in a literal and a literal back to speech. A literal to sentence structure must be appended e.g. ```speech(this, is, a, car)```
A java client can be found on the [samples](https://github.com/alexa/alexa-avs-sample-app)
  
  