monitor/att: Add decoding support for PAC Sink/Source

monitor/att: Add decoding support for PAC Sink/Source

This adds decoding support for PAC Sink/Source attributes:

 < ACL Data TX: Handle 42 flags 0x00 dlen 9
      Channel: 64 len 5 sdu 3 [PSM 39 mode Enhanced Credit (0x81)]
      {chan 0}
      ATT: Read Request (0x0a) len 2
        Handle: 0x0017 Type: Sink PAC (0x2bc9)
> ACL Data RX: Handle 42 flags 0x02 dlen 31
      Channel: 65 len 27 sdu 25 [PSM 39 mode Enhanced Credit (0x81)]
      {chan 0}
        Value: 010600000000100301ff0002020302030305041e00f00000
          Number of PAC(s): 1
          PAC #0:
            Codec: LC3 (0x06)
            Codec Specific Configuration #0: len 0x03 type 0x01
            Codec Specific Configuration: ff00
            Codec Specific Configuration #1: len 0x02 type 0x02
            Codec Specific Configuration: 03
            Codec Specific Configuration #2: len 0x02 type 0x03
            Codec Specific Configuration: 03
            Codec Specific Configuration #3: len 0x05 type 0x04
            Codec Specific Configuration: 1e00f000

Signed-off-by: Manika Shrivastava <manika.sh@samsung.com>
Signed-off-by: Ayush Garg <ayush.garg@samsung.com>