move common height function operations into `dune/vof/common/utility`
instead of  using inheritance

in case of 3d this is a full rewrite
also add a test

use optional to denote empty sets

Removed default constructor and added optional aware free functions for
interaction

compilation is still broken

`Point`, `Line`, `Polygon`, `Polyhedron` are slimmed down, not default
constructible anymore and `volume`/`centroid` are now free functions (optional aware)

compilation is still broken

this commit breaks compilation

move `isHomogeneous` into a seperate header for type traits