Remove debug name from MetadataLtv and store in in-memory structure.

By removing it from Metadata, we introduce another mechanism to store
the name in memory structure and output the name for debugging purpose
during matching.

Bug: 395093132
Test: atest VtsHalBluetoothAudioTargetTest
Change-Id: I4b59031c7207b27c0c0cb464efa4bf86506fa29f
6 files changed