Consolidate device converters for: Velo, Calo, FT and magnetic field

Change all remaining device geometry converters to use the common base class and condition derivations.

• Velo
• Calo Geometry
• SciFi Geometry
• magnetic field polarity

Simplify configuration of the converters as they all use the same mechanism now.

Documentation of the non-event dumpers has also been added to doc/integration