Add function material interface and button

StructureHelperLogics/Models/Materials/HeadMaterialRepository.cs

@@ -10,20 +10,16 @@ namespace StructureHelperLogics.Models.Materials
     public class HeadMaterialRepository : IHeadMaterialRepository
     {
         public object Parent { get; private set; }
-
         public List<IHeadMaterial> HeadMaterials { get; set; }
-
         public HeadMaterialRepository()
         {
             HeadMaterials = new List<IHeadMaterial>();
         }
-
         public HeadMaterialRepository(object parent)
         {
             Parent = parent;
             HeadMaterials = new List<IHeadMaterial>();
         }
-
         public void RegisterParent(object obj)
         {
             Parent = obj;