Updated Rich1 position and checksums
requested to merge bcouturi-dd4hep-RichDetectorSystem-FromJune2021 into dd4hep-RichDetectorSystem-FromJune2021
I also rebased teh branch on master at the same time.
patch generated by https://gitlab.cern.ch/lhcb/Detector/-/jobs/13630936
Edited by Ben Couturier