Add 'source/peers/client/packages/sandblox/' from commit '265b1bb135c1d6b97257c8cc4ae25b443e03a6ef'

git-subtree-dir: source/peers/client/packages/sandblox
git-subtree-mainline: 0c78e846ba720fa512915f6b3e3b6460f1107212
git-subtree-split: 265b1bb135c1d6b97257c8cc4ae25b443e03a6ef