Logics of accidental eccentricity were separated and tested

StructureHelperCommon/Models/Sections/Logics/IRcAccEccentricityLogic.cs

@@ -0,0 +1,12 @@
+namespace StructureHelperCommon.Models.Sections.Logics
+{
+    public interface IRcAccEccentricityLogic : IProcessorLogic<(double ex, double ey)>
+    {
+        double Length { get; set; }
+        double SizeX { get; set; }
+        double SizeY { get; set; }
+        IShiftTraceLogger? TraceLogger { get; set; }
+
+        (double ex, double ey) GetValue();
+    }
+}