This is a step towards abstracting the idea of an Enclosure which ties Mycroft to the hardware that is running Mycroft.
- Move the enclosure API to mycroft.enclosure.api (previously was mycroft.client.enclosure.api)
- Move display_manager out of enclosure client to mycroft.enclosure.display_manager
- Merge EnclosureWeather into EnclosureMouth
- Wrap display manager in a class