This change implements layout for font-relative paragraph first-line
indentation in Writer.
Change-Id: Ie8f386bcc13a43ab92d5c15654c24bfdfc62bd69
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/176216
Tested-by: Jenkins
Reviewed-by: Jonathan Clark <jonathan@libreoffice.org>