refactor and add using constants instead of hard coded strings ...

Interfaces/Entities/IXWebinarSeeder.cs

@@ -0,0 +1,9 @@
+using System;
+using xDataService.Interfaces;
+using xWebinarService.Models.Entities;
+
+namespace xWebinarService.Interfaces.Entities
+{
+    public interface IXWebinarSeeder : IXBaseDbSeeder<XWebinar, Guid>
+    { }
+}