Add a sensitive detector creation file for HGCal which will work forno cell creation for the silicon part

Author: Sunanda

Geometry/HGCalSimData/data/hgcsensv19n.xml

@@ -0,0 +1,21 @@
+<?xml version="1.0"?>
+<DDDefinition>
+
+<SpecParSection label="hgcsens.xml" eval="true">
+  <SpecPar name="hgcee">
+    <PartSelector path="//HGCalEESensitive.*"/>  
+    <Parameter name="SensitiveDetector" value="HGCalSensitiveDetector" eval="false"/>
+    <Parameter name="ReadOutName" value="HGCHitsEE" eval="false"/>
+  </SpecPar>
+  <SpecPar name="hgchesil">
+    <PartSelector path="//HGCalHESiliconSensitive.*"/> 
+    <Parameter name="SensitiveDetector" value="HGCalSensitiveDetector" eval="false"/>
+    <Parameter name="ReadOutName" value="HGCHitsHEfront" eval="false"/>
+  </SpecPar>
+  <SpecPar name="hgchesci">
+    <PartSelector path="//HGCalHEScintillatorSensitive.*"/> 
+    <Parameter name="SensitiveDetector" value="HGCScintillatorSensitiveDetector" eval="false"/>
+    <Parameter name="ReadOutName" value="HGCHitsHEback" eval="false"/>
+  </SpecPar>
+</SpecParSection>
+</DDDefinition>