Flicker: Add seamless rotation tests

Adds an app that supports seamless rotation and accompanying test cases to detect:
 - navigation bar and app is always visible
 - app position moves from start to end position without any intermediate states
 - during the transition, the entire display region is covered by one more more layers

Bug: 64532606
Test: atest FlickerTest
Change-Id: Ifb5acd7293d3ab1d29ade91012277649ef4c6d29