[Logs] Added Exception saving

Logs/DBO/OpResult.cs

         /// </summary>
         public string PrivateDetails { get; set; }
 
+        /// <summary>
+        /// Original error stack trace
+        /// </summary>
         public StackFrame[] StackFrames { get; set; }
 
+        /// <summary>
+        /// Caught exception, if any
+        /// </summary>
+        public Exception Exception { get; set; }
+
         /// <summary>
         /// The data returned by the call
         /// Only relevent if Success is true
                 message += inner.GetType().Name + ": " + inner.Message + (inner.InnerException != null ? "\n" : "");
                 inner = inner.InnerException;
             }
-            return Error(status, message, userDetails);
+            var res = Error(status, message, userDetails);
+            res.Exception = e;
+            return res;
         }
 
         /// <summary>