Added player 1 won method

src/main/java/game/StartTicTacToeGame.java

@@ -311,5 +311,22 @@ public class StartTicTacToeGame implements ActionListener{
 				player2button9Pressed = true;
 			}
 		}
+		
 	}	
+	public void player1Won() {
+		label.setText("Spieler 1 hat gewonnen.");
+		label.setBounds(250,20,500,50);
+		button.setVisible(false);
+		button2.setVisible(false);
+		button3.setVisible(false);
+		button4.setVisible(false);
+		button5.setVisible(false);
+		button6.setVisible(false);
+		button7.setVisible(false);
+		button8.setVisible(false);
+		button9.setVisible(false);
+		
+		//zurück button
+		backButton.setVisible(true);
+	}
 }