Identify images per package

In the Big Bang CI pipeline, we output the images.txt, but have no way of identifying which images come from which packages. This can be a problem trying to put together an airgapped tarball of the images and not everything is enabled. We need a way to identify which images are associated with which packages.

The suggested approach is to add images.txt to the package pipeline for releases. In the Big Bang pipeline, pull the images.txt list from the package and use it to identify which image belongs to which package.