Library material was added

StructureHelperCommon/Infrastructures/Enums/CodeTypes.cs

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+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace StructureHelperCommon.Infrastructures.Enums
+{
+    public enum CodeTypes
+    {
+        SP63_13330_2018,
+        EuroCode_2_1990
+    }
+}

StructureHelperCommon/Infrastructures/Enums/MaterialTypes.cs

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+namespace StructureHelperCommon.Infrastructures.Enums
+
+{
+    public enum MaterialTypes
+    {
+        Concrete,
+        Reinforcement,
+        //Steel,
+        //CarbonFiber,
+    }
+}