grid.js -> grid.ts
Refactor grid class to typescript class
refactor local_score_manager to typescript class
keyboard_input_manager.js -> keyboard_input_manager.ts
Refactor KeyboardInputManager to typescript class
Refactor KeyboardInputManager to typescript class
application.js -> application.js
html_actuator.js -> html_actuator.ts
html_actuator.js -> html_actuator.ts
Refactor HTMLActuator to typescript class