Add missing info to aux tables for GeoModelXml ReadoutGeometry

Add two missing pieces from previous implementation:

• Common parameters used by all sensor classes/types were missed previously. They are now added to the information for each sensor. This is a bit of a duplication of information since they are the same for all sensors (or at least all sensors of a given class) but it seems better than having to add several additional tables with only one entry which need to be accessed.
• Adding the sensor type name and level of splitting to the table of Full Phys Vol info. This will allow the correct design to be looked up from a map and associated when creating the DetectorElemenents.

There are still some small differences observed when testing this in Athena, but I suspect that the fixes will be on the Athena side and not the GeoModel side, and will be easier to pin down once this is merged.