Add value diagram windows and view models

StructureHelperCommon/Models/Shapes/Logics/CircleToDxfCircleConvertStrategy.cs

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+using netDxf;
+using netDxf.Entities;
+using StructureHelperCommon.Infrastructures.Interfaces;
+
+namespace StructureHelperCommon.Models.Shapes.Logics
+{
+    public class CircleToDxfCircleConvertStrategy : IShapeConvertStrategy<Circle, ICircleShape>
+    {
+        public double Dx { get; set; } = 0;
+        public double Dy { get; set; } = 0;
+        public double Scale { get; set; } = 1;
+
+        public Circle Convert(ICircleShape source)
+        {
+            Vector3 center = new Vector3() { X = Dx * Scale, Y = Dy * Scale};
+            Circle circle = new Circle()
+            {
+                Radius = source.Diameter / 2 * Scale,
+                Center = center,
+            };
+            return circle;
+        }
+    }
+}