provide tof v21a geometry

Norbert Herrmann requested to merge n.herrmann/cbmroot:cbm_tof_geo_v21a into master

Update CBM TOF geometry to version v21a for Online TDR with latest version of inner wall, The number of module types is increased to 15 requiring an update of CbmTofGeoHandler which is backward compatible. The merge request is accompanied with 2 others for the geometry and the parameter file.

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