Adding authentication and authorization flow

MainProject/Models/Database/SqlServer/Base.cs

@@ -4,6 +4,7 @@ namespace BasicDotnetTemplate.MainProject.Models.Database.SqlServer
     {
         public int Id { get; set; }
         public string Guid { get; set; }
+        public bool IsDeleted { get; set; }
         public DateTime CreationTime { get; set; }
         public int CreationUserId { get; set; }
         public DateTime UpdateTime { get; set; }