am 9b825aa: AI 148470: add documentation about aapt image optimization

Merge commit '9b825aa0eec5f143cec4c3cfeff97ba8d3d9d093' into donut

* commit '9b825aa0eec5f143cec4c3cfeff97ba8d3d9d093':
  AI 148470: add documentation about aapt image optimization