Refactoring: add some button icons

StructureHelperCommon/Models/Forces/ForceCombinationFromFile.cs

@@ -0,0 +1,34 @@
+using StructureHelperCommon.Models.Shapes;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StructureHelperCommon.Models.Forces
+{
+    internal class ForceCombinationFromFile : IForceCombinationFromFile
+    {
+        public Guid Id { get; set; }
+        public string Name { get; set; } = string.Empty;
+        public List<IForceFileProperty> ForceFiles { get; set; } = new();
+        public bool SetInGravityCenter { get; set; } = true;
+        public IPoint2D ForcePoint { get; set; } = new Point2D();
+
+
+        public object Clone()
+        {
+            throw new NotImplementedException();
+        }
+
+        public IForceCombinationList GetCombination()
+        {
+            throw new NotImplementedException();
+        }
+
+        public List<IForceCombinationList> GetCombinations()
+        {
+            throw new NotImplementedException();
+        }
+    }
+}