Sound / Icon / Console window

- Changed properties of 'Engine' to include OpenAL
- Changed post-build commands for 'Engine' to only include commands
related to the 'Engine'
- Changed post-build commands for 'Moto' to include commands related to
resources and shaders
- Added an icon to the game
- Added looping sound to the game
- Sound is played by pressing the 'G' key
- Added console window; can write to it with regular cout commands

Known bugs:
- Icon only appears on .exe and in the console window, not the HWND
- Sound does not pause when the window is not active; this is due to the
fact that sound is currently being handled in 'Moto' rather than
'Engine'