This PR implements the pointing system for the roadmap games.
To test:
Play roadmap game 1, 2, 3, 4 :
Each correct answer should update the top bar by one point, you can earn a max of 20 points, and must earn 17 to pass, if completed, the UI of the tile should update to completed state.
You can still earn points if going back to play if current game score is less than 20.
Once you reached the max points, you can't earn any more points.
Try going back to roadmap with the back button while on game, if score >= 17, the state of the tile should update to completed.
This PR implements the pointing system for the roadmap games.
To test: Play roadmap game 1, 2, 3, 4 :