Add mcbm2022 TOF v21k_mcbm geometry

1. TOF 21k_mcbm geometry taken from Norbert working directory: /lustre/cbm/users/nh/git/cbmroot/geometry/tof/tof_v21k_mcbm.geo.root

2. It is set as default in setup_mcbm_beam_2022_05_23_nickel.C

3. The corresponding parameter file is commited here: cbmroot_parameter!157 (closed)

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In case you committed a new geometry:

• Ran the scripts for materials and radiation length check on my new geometry file? (and read carefully the output of course)

  bash ci_scripts/check_radlen.sh <path>/<file>.geo.root

• Added also the corresponding creation macro?
• Checked that the geometry does not contains unexpected overlaps, e.g. either at end of the creation macro or with the something similar to the mCBM macro
  macro/mcbm/mcbm_check_overlaps.C

In case you committed a new setup file:

• Checked that all geometries listed are present in the repository?
• Ran the CBMROOT macro/geometry/check_media.C on the corresponding .geo.root file? (output by the transport macro)

setup/setup_mcbm_beam_2022_05_23_nickel.C

@@ -77,7 +77,7 @@ void setup_mcbm_beam_2022_05_23_nickel() {
   TString trdGeoTag  = "v22h_mcbm"; // TRD-2D May 2022 + 2x TRD-1D modules
 
   // done
-  TString tofGeoTag  = "v21j_mcbm"; //
+  TString tofGeoTag  = "v21k_mcbm"; //
 
   // done
   TString richGeoTag = "v21c_mcbm"; // othogonal to z-axis