Add cases for date, time and timestamp data types in prepared statement of firebird embedded database. Add unit tests for this particular case and for testing the DBTypeConversion functions toDate, toTime, toDateTime that used in the fix. Change-Id: I91fd2322598b14f84a96f071ed029c9b3e64d51e Reviewed-on: https://gerrit.libreoffice.org/c/core/+/204841 Reviewed-by: Xisco Fauli <xiscofauli@libreoffice.org> Tested-by: Jenkins