Move the class out of weld.hxx into its own header, in order to make it easier to keep an overview and to avoid having to recompile ~all UI code when the class is modified. Change-Id: I0cc1e0f3aa60d3457af0f0f30ec8fe74cb5ce6a9 Reviewed-on: https://gerrit.libreoffice.org/c/core/+/205489 Tested-by: Jenkins Reviewed-by: Michael Weghorn <m.weghorn@posteo.de>