Play sound when all three shapes match

On the shape matching game, a sun appears when all three shapes have been matched. Modify this game, so that it plays a sound when the sun appears.

Bonus, play a sound when each shape is matched.

Start by locating the shape matching game and the code path where the sun appears after all three matches. Identify the existing game assets or audio handling before deciding how the sound should be triggered. Done means a sound plays when the sun appears; the bonus also plays one for each matched shape.

Written by the indexing model from the issue text.