Support passing java.util.Date as a Field<Object> bind value

[lukaseder]

When using plain SQL, we currently cannot use java.util.Date values as follows:

java.util.Date d = new java.util.Date(0);
Field<Object> f = field(name(TDates_TS().getName()));

Query q = create().insertInto(TDates(), TDates_ID(), f).values(1, d);
assertEquals(1, q.execute());

Of course, a more appropriate data type would be java.sql.Date or java.sql.Timestamp or any java.time data type. But for legacy reasons, users may not be able to use those data types.

In the absence of a specific data type binding or converter, we should bind java.util.Date as java.sql.Timestamp, transferring the unix timestamp between the data types.

[lukaseder]

Related issue: #7370