We hijack the chart CID protocol (CID:/classification/ObjectID) by
inserting information about selection handling properties (draggable,
resizable, rotatable) btw the classification section and the ObjectID
section.
This new section has the form: /Draggable=?:Resizable=?:Rotatable=?
where in place of '?' there is 0 or 1.
The hijacking occurs at the ChartController.getSelection method which
is available through the XSelectionSupplier interface.

Change-Id: Iaf920fe68e59c2595000e43d3fc1f976632cef18
Reviewed-on: https://gerrit.libreoffice.org/70567
Tested-by: Jenkins
Reviewed-by: Marco Cecchetti <mrcekets@gmail.com>