Y player based on the Fuego library using MCTS.

Uses a new connection algorithm:

• Computes groups, which are sets of pairwise path-connected blocks.
• Fast enough it is used at all times, even during the playout phase.

Playouts use the SaveBridge pattern. Move selection during the playout phase is implemented to support weighted-random selection, however, no weights have been computed at this time, and so all cells are equally weighted.