Deferred components integration test app

Setup

This integration test app requires manually downloading additional assets to build. Run

./download_assets.sh

before running any of the tests.

This app contains two sets of tests:

flutter drive tests that run a debug mode app to validate framework side logic
run_release_test.sh <bundletool.jar path> which builds and installs a release version of this app and validates the loading units are loaded correctly. A path to bundletool.jar must be provided