Refactoring of IGeometryInfo

This is a workaround useful while we still have DetDesc in the LHCb project. It is an alternate version of !3451 (closed)that requires less changes in the stack.

Part of set: Detector!157 (merged) !3455 (merged) Rec!2777 (merged) Lbcom!601 (merged) Boole!385 (merged) Run2Support!22 (merged) Alignment!252 (merged)