feat: select game duration

app/src/main/java/network/server/ServerConnexion.java

@@ -76,7 +76,7 @@ public class ServerConnexion extends Connexion {
 			setSudoku(game.getDoku().clone());
 			sendPacket(
 					new StartGamePacket(SudokuSerializer.serializeSudoku(game.getDoku()).toString(),
-							game.getStartTime()));
+							game.getStartTime(), game.getGameDuration()));
 		}
 	}
 
@@ -148,6 +148,15 @@ public class ServerConnexion extends Connexion {
 			this.server.getGame().setPlayerScore(player, player.getScore() - 1);
 			this.server.broadcastPacket(new UpdatePlayerScorePacket(player.getId(), player.getScore()));
 		}
+		checkWin();
+	}
+
+	private void checkWin() {
+		if (this.player.getScore() == 0) {
+			// we don't need to specify the winner since it has to be the first
+			this.server.broadcastPacket(new EndGamePacket());
+			this.server.getGame().stopGame();
+		}
 	}
 
 	public void setSudoku(MultiDoku doku) {