Minor improvement

Packages/de.jmu.ge.viavr.gameplaymanager/Editor/Package.cs

 namespace de.jmu.ge.viavr.UnityBridge {
-    public class Package {
+    public abstract class Package {
         /// <summary>
         /// 
         /// </summary>

Packages/de.jmu.ge.viavr.gameplaymanager/Editor/UnityBridge.cs

@@ -14,6 +14,7 @@ public static void ExecuteAll() {
         public static void Init() => CallMethods(nameof(Package.Init));
 
         [MenuItem("Test/Configure Scenes")]
+        // TODO: open each scene and execute methods
         public static void OnConfigureScene() => CallMethods(nameof(Package.OnConfigureScene));
 
         public static void OnPostConfiguration() => CallMethods(nameof(Package.OnPostConfiguration));