Adds the "AMAZON.NavigateHomeIntent" builtin intent.

[AshleyMedway]

Also cleaned up mixed tabs/spaces in file

See doc: https://developer.amazon.com/en-US/docs/alexa/custom-skills/standard-built-in-intents.html#amazonnavigatehomeintent

[stoiveyp]

Hi @AshleyMedway, appreciate the PR - as NavigateHomeIntent is handled by Alexa devices and isn’t sent to a custom skill, wondering if we could add the use case for having it in the code?

[AshleyMedway]

Ah, maybe a misunderstanding on my part, I thought we need to handle this intent as a separate exit case, like "Cancel"

[stoiveyp]

Ahh no, you have to handle stop and cancel, but navigate home isn’t sent to the skill - the explanation is in that link you attached 👍