Merge branch 'FastCaloSim_AuxStorageForTFCSSimulationState' into '21.0'

Add functionality to store auxiliary information in TFCSSimulationState

See merge request !24343

(cherry picked from commit 32352233)

d19b7063 Add functionality to store auxiliary information in TFCSSimulationState
33575d55 update copyright statement for TFCSSimulationState
6d5043e2 Use template implementations to set and get the AuxInfo
836991ce fix typos in the comments and examples
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