Geometries hierarchically list

The geometries in the scene are displayed hierarchically, in a list distributed over a maximum of seven levels.
Each geometry in the scene is displayed with the name in this list, and can have the following functions:

- Click on the name of the geometry to display geometry and material properties
- Drag and drop between the geometries to change the render oreder and the hierarchy
- Geometries visibility to include or not a geometry in the render pipeline
- Clone geometries to duplicate an geometry or a structure of geometries
- Delete geometries to exclude a geometry from the scene

* Try the functionalities of the hierarchically geometries list