Synch xmls between 62XSLHC dev and 73X (upgrade phase1 and phase2 Tracker) 

continuing the cleaning/synchronization with 62XSLHC : 
- For Phase2 : ExtendedPhase2TkBE5DPixel10D is the only phase2 tracker scenario supported (phase2 Tracker + extendedPixel)
So,  I removed evything like ExtendedPhase2TkBE5D, PixelForward etc...and put the xml for ExtendedPhase2TkBE5DPixel10D + config files
The xml are in PhaseII/Pixel10D/ as they were already defined in 62XSLHC.

In addition new developments for phase1 xml (Geometry/TrackerCommonData/data/PhaseI/trackerStructureTopology.xml) has been taken into account.

For the moment not a single working workflow is using these geometries (this is to a preliminary step to make it run actually) 

@venturia: I included your xml files from your branch in this PR