and related css::util::SearchOptions2

The TransliterationModules enum has it's constants spread over multiple
UNO enum/constant-collections - TransliterationModules and
TransliterationModulesExtra, which means that most code simply uses
sal_Int32.

Wrap them up into a better bundle so that only the lowest layer needs to
deal directly with the UNO constants.

Change-Id: I1edeab79fcc7817a4a97c933ef84ab7015bb849b
Reviewed-on: https://gerrit.libreoffice.org/34582Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
Tested-by: Noel Grandin <noel.grandin@collabora.co.uk>