Add metadata to FEXReprocessing output

With this MR, the metadata are added to the xAOD produced by FEXReprocessingRun3.

This merge request affects 1 package:

• Trigger/TrigT1/L1CaloFEX/L1CaloFEXSim

This merge request affects 1 file:

• Trigger/TrigT1/L1CaloFEX/L1CaloFEXSim/python/FEXReprocessingRun3.py

Adding @thompson ,@will as watchers

added L1Calo Trigger main review-pending-level-1 labels

CI Result SUCCESS (hash 62b48682)

	Athena
externals
cmake
make
tests

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Athena: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST-EL9 353]

Looks good to me. Approved.

Cheers L1

added review-approved label and removed review-pending-level-1 label

merged

mentioned in commit 231a728f

added sweep:ignore label