fix: changed gamestate event to new format

BREAKING-CHANGE: GamestateEvent parameter type changes

src/main/java/uulm/teamname/marvelous/gamelibrary/events/GameStateEvent.java

@@ -5,7 +5,7 @@ import uulm.teamname.marvelous.gamelibrary.entities.EntityID;
 
 /** Represents the game state event ({@link EventType#GameStateEvent}). */
 public class GameStateEvent extends Event {
-    public Entity[][] map;
+    public Entity[] entities;
     public EntityID[] turnOrder;
     public EntityID activeCharacter;
     public boolean winCondition;