mediapc: Add Media Performance Class test stub

This will be expanded with actual performance class specific tests.

Bug: 184201129
Test: atest android.mediapc.cts.PeformanceClassTest
Merged-In: I7446235da7b328f6e61ec4bc4a4912d57a487999
Change-Id: Ifda0bff5402ffcb61083f6b7bb0933be9606a3bc
(cherry picked from commit 848bcfe5bc1a1970711a9d0cce99c15e16766ef4)
8 files changed