Unrotate going-away apps during a launch-into-orientation transition

When going from a non-launcher task to another non-launcher task
that is in a different orientation, we just animate the new task
opening in the new orientation (no screen rotation animation). To
make this work, though, we need to unrotate all the going-away
windows because they are in the old orientation.

Added CounterRotator to a utility area in shell so it can be
shared with other components (like Sysui shared lib).

Bug: 183993924
Test: atest OpenAppColdTest
Change-Id: I0263dfb8d529b6fc3dfbe3775e3e6e0b77f6ca8a