- Use the field map and beamline magnetic fields as defined via compact
detector description.
- There is probably a better implementation but this is the most direct.

- A lot has changed since 1.0
- The source link is simplified and has a corresponding measurement
class now
- Copied Bfield and utilties from acts examples
- Currently it only compiles. Need to check reconstruction.

It Builds with acts 4.1.0

	modified:   GeoSvc.cpp
	modified:   GeoSvc.h