Move common audio AIDL types to audio.media.audio.common

The following types are being moved from 'android.media':
 - AudioChannelLayout
 - AudioFormatDescription
 - AudioFormatType
 - PcmType

Updated usages and conversion functions.

Bug: 188932434
Test: atest audio_aidl_conversion_tests
Test: atest audiofoundation_parcelable_test
Change-Id: Ib65a4f428da4a7f29ec22bc2a393617c6c4389d0