monitor/att: Add decoding support for PAC Audio Context

monitor/att: Add decoding support for PAC Audio Context

This adds decoding support for PAC Audio Context attributes:

> ACL Data RX: Handle 42 flags 0x02 dlen 9
      Channel: 65 len 5 sdu 3 [PSM 39 mode Enhanced Credit (0x81)] {chan 1}
      ATT: Read Request (0x0a) len 2
        Handle: 0x0026 Type: Supported Audio Contexts (0x2bce)
< ACL Data TX: Handle 42 flags 0x00 dlen 11
      Channel: 64 len 7 sdu 5 [PSM 39 mode Enhanced Credit (0x81)] {chan 1}
      ATT: Read Response (0x0b) len 4
        Value: ff0f0e00
        Handle: 0x0026 Type: Supported Audio Contexts (0x2bce)
            Sink Context: 0x0fff
              Unspecified (0x0001)
              Conversational (0x0002)
              Media (0x0004)
              Game (0x0008)
              Instructional (0x0010)
              Voice Assistants (0x0020)
              Live (0x0040)
              Sound Effects (0x0080)
              Notifications (0x0100)
              Ringtone (0x0200)
              Alerts (0x0400)
              Emergency alarm (0x0800)
            Source Context: 0x000e
              Conversational (0x0002)
              Media (0x0004)
              Game (0x0008)

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