Draft: "Modernize" CMake configuration
This MR align the content of the LHCb Geant4 project with that of the official Geant4 repository, with the addition of LHCb patches, physics lists and tests.
The Geant4 version used as baseline is 10.7.3
This MR align the content of the LHCb Geant4 project with that of the official Geant4 repository, with the addition of LHCb patches, physics lists and tests.
The Geant4 version used as baseline is 10.7.3