allow resetting games

src/Core/GameBoard.h

@@ -29,6 +29,18 @@ class GameBoard {
          */
         GameBoard(int boardWidth, int boardHeight, const std::shared_ptr<PiecesList>& bag, int nextQueueLength);
 
+        /**
+         * Resets the board as if it was newly created
+         */
+        void reset();
+
+    private:
+        /**
+         * Initializes the board
+         */
+        void initialize();
+
+    public:
         /**
          * Tries moving the piece one position to the left
          * @return If it suceeded