Add OccludingAppDeviceEntryInteractor

Handles proceeding to the home screen on fingerprint
success.

Updates `message` when a new message should show
over an occluding app over the lockscreen

Test: atest OccludignAppDeviceEntryInteractorTest
Bug: 288308594
Change-Id: I0d29774956529bed7cc577ac9fc8eb7e49a2e249