Measurements of units were added

StructureHelperCommon/Services/Units/IUnit.cs

@@ -0,0 +1,20 @@
+using StructureHelperCommon.Infrastructures.Enums;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StructureHelperCommon.Services.Units
+{
+    /// <summary>
+    /// Interface for measurements Unit
+    /// </summary>
+    public interface IUnit
+    {
+
+        UnitTypes UnitType { get; }
+        string Name { get; }
+        double Multiplyer { get; }
+    }
+}