forked from amazingfate/loongoffice
add constructors to Date/DateTime/Time, that take the css::util counterparts, to simplify code converting between these type Change-Id: I4b03da02c63f65b6ec18cb4d6ecc3859bdef1ff7 Reviewed-on: https://gerrit.libreoffice.org/13855 Tested-by: Jenkins <ci@libreoffice.org> Reviewed-by: Eike Rathke <erack@redhat.com>