Update RichGeoCreater file to create RICH geometry v25a

Changes from geometry v24a to v25a:

• Redesign of the mirror holders
  • Replace old MirrorSupportBelts by new MirrorFixing which looks like the CAD model and the prototype
• Add a small plate at end of mirror support studs to fit the weight
• Fixing all overlaps in the geometry
• Fixing newly discovered bug in implementation of exit window
  • change of geometry hierarchy at exit window
  • similar change at entrance window to avoid potential of similar bug
• Additionally small changes (small regarding physics impact)
  • changes in the volume hierarchy to reduce the depth
  • changes in code of creator file to make it more efficient
  • replacing some hard coded numbers by variables
  • replacing double definitions of same volumes by copying

Additionally:

• Directly write (dummy) translation TGeoTranslation into geo file using macro/rich/create_rich_geo.C