R4 sTGC Geometry - Adding Pad Readout Element

Adding Pads to sTgc similar to wireGroup and Strips.

@alainb @jojungge @pscholer

MuonSpectrometer/MuonPhaseII/MuonDetDescr/MuonGeoModelR4/MuonGeoModelR4/sTgcReadoutGeomTool.h

@@ -61,7 +61,7 @@ class sTgcReadoutGeomTool : public AthAlgTool,
       std::vector<double> padHeight; //padH
       std::vector<int> PadPhiShift_A;
       //std::vector<int> firstPadRow;
-      //double anglePadPhi{0.};
+      double anglePadPhi{0.};
       std::vector<double> firstPadPhiDivision_A;
       //std::vector<int> PadPhiShift_C;
       //std::vector<double> firstPadPhiDivision_C;