fix(music player): fix game state not setting when credits are playing

src/main/java/de/hdm_stuttgart/battlearena/Controller/CreditsController.java

 package de.hdm_stuttgart.battlearena.Controller;
 
+import de.hdm_stuttgart.battlearena.Controller.Enum.GameState;
 import de.hdm_stuttgart.battlearena.Controller.Utilities.CreateMediaPlayer;
+import de.hdm_stuttgart.battlearena.Model.DataStorage.Classes.RuntimeInfo;
 import javafx.fxml.FXML;
 import javafx.fxml.FXMLLoader;
 import javafx.fxml.Initializable;
@@ -42,6 +44,7 @@ public class CreditsController implements Initializable {
     private void videoEnd() {
         try {
 //            I don't know how to return to the options scene, so it just goes back to the main menu :(
+            RuntimeInfo.getInstance().setGameState(GameState.MENU);
             mediaPlayer.dispose();
             parent.getChildren().clear();
             parent.getScene().setRoot(FXMLLoader.load(Objects.requireNonNull(getClass().getResource("/fxml/MenuBorderPane.fxml"))));

src/main/java/de/hdm_stuttgart/battlearena/Controller/LoadingScreenController.java

@@ -75,7 +75,7 @@ public class LoadingScreenController implements Initializable {
 
     Thread loadStatistics = new Thread(() -> {
         try {
-            Thread.sleep(4000);
+            Thread.sleep(5000);
             loadStatistics();
         } catch (IOException e) {
             throw new RuntimeException();

src/main/java/de/hdm_stuttgart/battlearena/Controller/SettingsController.java

 package de.hdm_stuttgart.battlearena.Controller;
 
+import de.hdm_stuttgart.battlearena.Controller.Enum.GameState;
 import de.hdm_stuttgart.battlearena.Controller.Utilities.SceneLoader;
 import de.hdm_stuttgart.battlearena.Model.DataStorage.Classes.Persistence;
+import de.hdm_stuttgart.battlearena.Model.DataStorage.Classes.RuntimeInfo;
 import de.hdm_stuttgart.battlearena.Model.Sound.MusicPlayer;
 import de.hdm_stuttgart.battlearena.Model.Sound.SoundEffects;
 import javafx.fxml.FXML;
@@ -34,6 +36,7 @@ public class SettingsController implements Initializable {
 
     @FXML
     private void creditScene() throws IOException {
+        RuntimeInfo.getInstance().setGameState(GameState.NONE);
         parent.getChildren().clear();
         parent.getScene().setRoot(FXMLLoader.load(Objects.requireNonNull(getClass().getResource("/fxml/credits.fxml"))));
     }