change project structure

app/src/main/java/chess/controller/OutputSystem.java

@@ -0,0 +1,25 @@
+package chess.controller;
+
+import chess.model.Color;
+import chess.model.Coordinate;
+
+public interface OutputSystem {
+
+	void playerTurn(Color color);
+
+	void winnerIs(Color color);
+
+	void kingIsInCheck();
+
+	void kingIsInMat();
+
+	void patSituation();
+
+	void hasSurrendered(Color color);
+
+	void gameStarted();
+
+	void promotePawn(Coordinate pieceCoords);
+
+	void updateDisplay();
+}