Added persistentManagers and gameplay scenes to build settings

UOP1_Project/ProjectSettings/EditorBuildSettings.asset

     path: Assets/Scenes/TestingGround.unity
     guid: 1e57caa7d7ed5e24a88cb3b5c309cc65
   - enabled: 1
-    path: Assets/Scenes/MultiSceneLoader/TestScene_03.unity
-    guid: fab260a559ee34842814a2d13b1c1798
+    path: Assets/Scenes/PersistentManagers.unity
+    guid: 969b7f174e8c76843aa3fcdbade0487b
-    path: Assets/Scenes/MultiSceneLoader/TestScene_02.unity
-    guid: 63d182036357bd94fb0fffb5af3736c0
-  - enabled: 1
-    path: Assets/Scenes/MultiSceneLoader/TestScene_01.unity
-    guid: 9bea58aee7d47cd45b9cc32b07287fcb
+    path: Assets/Scenes/Gameplay.unity
+    guid: 9a863f9bc60514821bc17f41d9f0162c
   m_configObjects:
     com.unity.addressableassets: {fileID: 11400000, guid: 758daf1c1b96e4978a5b9b3f5815abf1,
       type: 2}