Pixel Luminosity Rings hits collection
This MR is introducing a PLRGeoModelXml package and several other changes necessary to integrate the PLR detector in with athena and produce a PLR specific hits collection via simulation.
The PLRGeoModelXml package is structured following the model of ITk pixel, strip, and BCMPrime. Because the PLR is using the same sensors as the ITkPixel, the PLRGeoModelXml package utilizes the PixelDetectorManager, PixelG4_SD, and PixelID packages to create a PLR hits collection that is similar but separate from the ITkPixel.
As this is the first time the PLR has been introduced to athena, there were also several PLR specific control flags that needed to be created and used.
Finally, I also integrated the PLR into the SiHitAnalysis code such that the analysis would produce a separate ntuple for the PLR.