ITS: create test to test for scene change

Add test to check for afSceneChange flag. Testing done with
Pixel 4 cam[0] --> PASS with auto and manual
Pixel 3 cam[0] --> SKIP
Tecno Spark 3 cam[0] --> SKIP, but correct behavior less 3A

bug: 69932800

Change-Id: Ia3eddb8f2d20366c46991cfce6c45ad8edb64cf3