🎮 Add Xbox Controller support for at least the PC version of the game

Now that Microsoft and Xbox have ownership of the Candy Crush Saga series, I'd like to bring up the possibility of Xbox controller support for the game's computer version.

The control scheme for an Xbox controller would simply work like this: You use left stick to choose a candy, and flick the right stick to swap it with its adjacent neighbors. You also use the d-pad to cycle between boosters, then press both shoulder buttons to activate a booster (so that you don't use one on accident).