sw content controls, picture: add doc model & UNO API

This is meant to be a content control (providing rich text), which is
also a picture placeholder field.

Add a new Picture property to track this type, this way the click
handler will be able to present a file picker when showing the
placeholder.

Change-Id: Ibbd3720fc94d0f17654ec813821d218166c76424
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/134457
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>
Tested-by: Jenkins

0 files changed, 0 insertions, 0 deletions