Make DateTimeOffsetTests work for Oracle which does not allow such a column

to be a primary key or have a unique index. Which makes perfect sense, seems to
me other databases ought to have a similar restriction.

Author: BruceCowan-AI

tests/ServiceStack.OrmLite.Tests/DateTimeOffsetTests.cs

@@ -76,13 +76,15 @@ private interface IDateTimeOffsetObject<T>
         }
 
 
-        public class HasDateTimeOffsetMemeber
+        public class HasDateTimeOffsetMember
         {
+            public int Id { get; set; }
             public DateTimeOffset MomentInTime { get; set; }
         }
 
-        public class HasNullableDateTimeOffsetMemeber
+        public class HasNullableDateTimeOffsetMember
         {
+            public int Id { get; set; }
             public DateTimeOffset? MomentInTime { get; set; }
         }