Menu + Mouse Event Update
- Added Scene Enumeration (MENU_SCENE, SIMULATOR_SCENE, CREDIT_SCENE)
- Added Scene handling to go from menu scene to simulator scene
- Added AI and update handlers to menu scene
- Added key event methods to Menu Scene
- Changed window to return key down, key up, key pressed/released booleans instead of just keys (needed for Menu Scene button events and detections)
- Added mouse events to window and returns pressed mouse buttons
- Added max mouse buttons to global config