AudioFlinger: Extract MelReporter class

Test: atest audiorecord_tests audiotrack_tests audiorouting_tests trackplayerbase_tests audiosystem_tests
Test: atest AAudioTests AudioTrackOffloadTest
Test: atest AudioTrackTest AudioRecordTest
Test: YouTube Camera
Bug: 288339104
Change-Id: I4bd74a19d3ca95ea1dc45a80bca6eb242a11fe3c
3 files changed