Implement more login repository methods added to support the initial game
domain functionality.  Change the constructor of LoginUser to be protected.
Add framework files for Push Notifications, which is similar to command/event
framework files, but less domain-specific.
Refactor the game functionality to use a CQRS/DDD/ES pattern.  This gets the
main game create/join/starting functionality working, up to the point of
actually transferring over to the table domain area.