Implement the Smart Home API

[maxbeckers]

This is a huge issue.
But would be very nice: Implement the full Smart Home API.
For more Details see https://developer.amazon.com/de/docs/device-apis/alexa-brightnesscontroller.html.

Here we don't have a type to find the request type class. So we should use the values directive.header.namespace and directive.header.name to detect the request type.