Implementation of basic text primitives. It supports text, textstyle (bold, italic, font, font size, direction, color, locale.
The positions are well-transformed.

Also a few adjustments and supplements for EMFplus font and stringformat

Change-Id: I2670b5d0f6b9ddcaa9ffc8262d8aee13ba224b77
Reviewed-on: https://gerrit.libreoffice.org/40635Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Armin Le Grand <Armin.Le.Grand@cib.de>