Recycle Puzzle Scenes

[lejara]

This feature is a like to have. Unless we get a performance impact, then this is a need.

Since non-static objects in a scene are destroyed automatically when that scene is unloaded, we would need a way to keep the puzzle scene but have it unactive and not visable when not in use.
Then in each puzzle, we would need to implement how to handle existing scene objects, and not destroy them. But instend reset the object and reuse them.