Enhance the Protein Rendering

[Domino2357]

The Problem People who work with proteins need more functionality and better interaction with said functionality.

The (not exhaustive) List of Improvements

• [ ] possibility to rotate the proteins in VR
• [ ] possibility to scale proteins in VR
• [ ] being able to change to a space-filling representation during runtime
• [x] possibility to select sidechains
• [ ] possibility to highlight specific amino acids
• [ ] widen the helices (strictly speaking an aesthetic improvement)
• [ ] correct rainbow coloring
• [ ] implement visualization for solvent-accessible surface area (see https://en.wikipedia.org/wiki/Accessible_surface_area#Shrake–Rupley_algorithm)

Additional context Every item in the list that involves interaction needs to be available in VR as well.