Game: Rename App class to Game
Game: Move main entry function to main.cpp
CardHand: Refactor randomize method

* Rename randomize to shuffle
* Remove while loop from method; this is now done outside of the method
Game: Fix compile err with MSVCPP
Game: Re-implement sleep-away spare CPU ticks on game loop
Update code to use nomlib’s latest API (dev branch)
ContinueMenuStateCursor: Fix cursor bug (going off bounds)
Clean up code a bit
Update to nomlib’s latest API (dev branch)
GameOverState: Fix crash that results with exiting PauseState
GameOverState: Implement left/right mouse wheel events
ContinueMenuState: Implement (almost) working mouse support