Is the Davinci Format documented enough to make a mapping?
this is hopefully just extended cmx3600 - but for real examples may be Andrea can provide some files (I think he had DaVinchi Resolve at some point)
there is c++ lib about this format
and infamous pdf file
opentimelineio has adapter, as well as openshot/blender/flowblade
but they map to their own thing, not to cinelerra's xml