Scene cloning from joker games

[jimver04]

Each joker game should have all scenes that should be cloned to all new games.

e.g. the Chemistry-Joker should have

First Scene, Main Menu, Credits, Exam 2D, Exam 3D

that should be cloned to every newly generated Chemistry Game Steps

• [ ] 1. Allow joker games to have scenes
• [ ] 2. Make the cloning
• [ ] 3. We will see next about the assets