The bot now has a brain

I just made a commit implementing the neural network, that will be used to guide the MCTS I created a few days ago.

The role of the NN in AlphaZero is really huge - it takes in the current position and predicts the probability for each move to be played, and how good or bad the position is for the current player.

As you can see from the screenshot, the NN is implemented in Python (PyTorch), but the MCTS is made in C++. You can probably guess it took quite a bit of time to get those two working together, but I think I got it under control.

Next up is the training loop for the NN