Add nEcalCluster in RecSummary

Simply add nEcalCluster in RecSummary as requested in the merge request Rec!3332 (comment 6563486)

Event/RecEvent/include/Event/RecSummary.h

@@ -67,6 +67,7 @@ namespace LHCb {
       nSPDhits          = 70,  // Number of SPD hits
       eCalTot           = 71,  // Total energy deposit in ecal
       hCalTot           = 72,  // Total energy deposit in hcal
+      nEcalClusters     = 73,  // Number of Ecal clusters
       nMuonCoordsS0     = 80,  // Number of Coords in Muon Station 0
       nMuonCoordsS1     = 91,  // Number of Coords in Muon Station 1
       nMuonCoordsS2     = 92,  // Number of Coords in Muon Station 2
@@ -165,6 +166,8 @@ namespace LHCb {
       return s << "eCalTot";
     case LHCb::RecSummary::hCalTot:
       return s << "hCalTot";
+    case LHCb::RecSummary::nEcalClusters:
+      return s << "nEcalClusters";
     case LHCb::RecSummary::nMuonCoordsS0:
       return s << "nMuonCoordsS0";
     case LHCb::RecSummary::nMuonCoordsS1: