The patch contains some additions to tdf#115813 and a unit test.
The test covers nearly all OOXML preset shapes with handles. Only
some shapes do not fit to the test pattern: swooshArrow and polar
handle shapes arc, blockArc, chord, circularArror, mathNotEqual,
pie, leftCircularArrow, leftRightCicularArrow.
The shapes star24 and star32 are excluded because of tdf#125181.
The shapes gear6 and gear9 are excluded because a correct handle
movement is not yet implemented.
Connector shapes are inserted as ordinary shapes to prevent
converting.
The error string is designed to identify the affected shape.

Change-Id: Icd3358f3701ac2db2cc61eb045ae10bc4b72b9ca
Reviewed-on: https://gerrit.libreoffice.org/72229
Tested-by: Jenkins
Reviewed-by: Regina Henschel <rb.henschel@t-online.de>