M2: Include module selection in the lobby

[guentherthiele]

Description

In order to have the users choose between different modules, a shelf with items representing the different available modules need to be included. Additionally, once this item is selected (/set on the podium?), a short description of the module needs to be visible.

Type of Issue

• New feature
• Bug fix
• Documentation update

[julianaarnold]

TODO:

• Show modules as Grabbable Objects
• Fix visibility of Module name, show module description
• Start Module when put on podium
• Update tutorial sequence (insert section for selecting a module)