Add TestApi annotation to AudioEffect, AudioFormat, VolumeShaper

Test: AudioEffectTest
Test: AudioRecordTest
Test: AudioTrackTest
Test: AudioTrackSurroundTest
Test: AudioTrack_ListenerTest
Test: BassBoostTest
Test: EnvReverbTest
Test: EqualizerTest
Test: LoudnessEnhancerTest
Test: PresetReverbTest
Test: VirtualizerTest
Test: VisualizerTest
Test: VolumeShaperTest
Bug: 77652246
Bug: 77651563
Bug: 77652497
Change-Id: I3a95cb6834fac0cd0cb88ea3ed0ba028aeddb3f2