Adding skeleton of L0 Muon RPC sim

Adding a first version of the stage-1 simulation alg for the L0 muon barrel trigger, based on RPC.

The package includes the skeleton of an alg, to be completed with the actual implementation of the coincidences, and the initial preparation of the RoI container to be exchanged with the MDT TP simulation.

A configuration is also included.

Trigger/TrigT1/Muon/L0MuonS1RPC/python/L0MuonS1RPCConfig.py

+#Copyright (C) 2002-2025 CERN for the benefit of the ATLAS collaboration
+from AthenaConfiguration.ComponentFactory import CompFactory
+from AthenaConfiguration.ComponentAccumulator import ComponentAccumulator
+
+from AthenaCommon.Logging import logging
+_log = logging.getLogger(__name__)
+
+def L0MuonRPCSimCfg(flags, name = "L0MuonRPCSim", **kwargs):
+
+    result = ComponentAccumulator()
+
+    alg = CompFactory.L0Muon.L0MuonRPCSim(name = name,
+                                          **kwargs)
+
+    from AthenaMonitoringKernel.GenericMonitoringTool import GenericMonitoringTool
+    monTool = GenericMonitoringTool(flags, 'MonTool')
+    monTool.HistPath = 'L0MuonRPCSim'
+    monTool.defineHistogram('track_input_eta', path='EXPERT', type='TH1F', title=';#eta_{#mu}^{truth};Muons', xbins=50, xmin=-3, xmax=3)
+
+    alg.MonTool = monTool
+
+    histSvc = CompFactory.THistSvc(Output=["EXPERT DATAFILE='" + name + ".root' OPT='RECREATE'"])
+
+    result.addEventAlgo(alg)
+    result.addService(histSvc)
+    return result
+  
+
+if __name__ == "__main__":
+    
+    from AthenaConfiguration.TestDefaults import defaultTestFiles
+    from AthenaConfiguration.AllConfigFlags import initConfigFlags
+    from AthenaCommon.Constants import DEBUG
+    flags = initConfigFlags()    
+    flags.Input.Files = defaultTestFiles.AOD_RUN3_MC
+    flags.Exec.MaxEvents = 20
+    flags.Common.MsgSuppression = False
+    flags.lock()
+
+    # create basic infrastructure
+    from AthenaConfiguration.MainServicesConfig import MainServicesCfg
+    acc = MainServicesCfg(flags)        
+ 
+    from AthenaPoolCnvSvc.PoolReadConfig import PoolReadCfg
+    acc.merge(PoolReadCfg(flags))
+
+    # example simulation alg
+    simAlg = L0MuonRPCSimCfg(flags,
+                             name = "L0MuonRPCSim",
+                             OutputLevel = DEBUG)
+    acc.merge(simAlg)
+
+    # below is validation
+    acc.printConfig(withDetails=True, summariseProps=True)
+
+    # run the job
+    status = acc.run()
+
+    # report the execution status (0 ok, else error)
+    import sys
+    sys.exit(not status.isSuccess())
+