Hearing Aid: Add dumpsys log for audio packet

Add log for audio drops from audio HAL and buffer overflow
Add log for device capabilities and HiSyncId

Sample output:

Hearing Aid Manager:
  <device1> connected
    binaural right 0x...
    Packet counts (enqueued/flushed)                        : 73557 / 773
    Frame counts (enqueued/flushed)                         : 73557 / 773
  <device2> connected
    binaural left 0x...
    Packet counts (enqueued/flushed)                        : 74172 / 886
    Frame counts (enqueued/flushed)                         : 74172 / 886
  Hearing Aid Audio HAL:
    Counts (underflow)                                      : 0
    Bytes (underflow)                                       : 0
    Last update time ago in ms (underflow)                  : 0

Test: manual
Bug: 69623109
Change-Id: I5021b9214828b1846506638000f29af7343a3354
(cherry picked from commit c5df6b01)