btm_iso: Add ISO tracking to btm dumpsys

Example logs:

shim::legacy::btm  2023-01-05 16:13:22.411 ISO    Establish CIS            : xx:xx:xx:xx:dc:71 handle:0x0041
shim::legacy::btm  2023-01-05 16:13:23.105 ISO    CIS established event    : xx:xx:xx:xx:dc:71 cis_handle:0x0061 status:Success
shim::legacy::btm  2023-01-05 16:13:23.210 ISO    Setup data path          : xx:xx:xx:xx:dc:71 handle:0x0061, dir:0x00, path_id:0x01, codec_id:0x03
shim::legacy::btm  2023-01-05 16:13:23.211 ISO    Setup data path complete : xx:xx:xx:xx:dc:71 handle:0x0061, status:Success
shim::legacy::btm  2023-01-05 16:13:23.289 ISO    Remove data path         : xx:xx:xx:xx:13:0d handle:0x0060, dir:0x01
shim::legacy::btm  2023-01-05 16:13:23.290 ISO    Remove data path complete: xx:xx:xx:xx:13:0d handle:0x0060, status:Success
shim::legacy::btm  2023-01-05 16:13:23.290 ISO    Disconnect CIS           : xx:xx:xx:xx:13:0d handle:0x0060, reason:Remote Terminated Connection
shim::legacy::btm  2023-01-05 16:13:23.329 ISO    CIS disconnected         : xx:xx:xx:xx:13:0d cis_handle:0x0060, reason:Local Terminated Connection
shim::legacy::btm  2023-01-05 16:13:23.329 ISO    Remove data path         : xx:xx:xx:xx:dc:71 handle:0x0061, dir:0x01
shim::legacy::btm  2023-01-05 16:13:23.330 ISO    Remove data path complete: xx:xx:xx:xx:dc:71 handle:0x0061, status:Success
shim::legacy::btm  2023-01-05 16:13:23.331 ISO    Disconnect CIS           : xx:xx:xx:xx:dc:71 handle:0x0061, reason:Remote Terminated Connection
shim::legacy::btm  2023-01-05 16:13:23.451 ISO    CIS disconnected         : xx:xx:xx:xx:dc:71 cis_handle:0x0061, reason:Local Terminated Connection
shim::legacy::btm  2023-01-05 16:13:23.451 ISO    CIG Remove               : xx:xx:xx:xx:00:00 cig_id:0x02 (f:0)
shim::legacy::btm  2023-01-05 16:13:23.453 ISO    CIG Remove complete      : xx:xx:xx:xx:00:00 cig_id:0x02, status: Success
shim::legacy::btm  2023-01-05 16:13:23.694 ISO    CIG Create               : xx:xx:xx:xx:00:00 cig_id:0x02, size: 2
shim::legacy::btm  2023-01-05 16:13:23.695 ISO    CIG Create complete      : xx:xx:xx:xx:00:00 cig_id:0x02, status: Success
shim::legacy::btm  2023-01-05 16:13:24.051 ISO    Establish CIS            : xx:xx:xx:xx:13:0d handle:0x0040
shim::legacy::btm  2023-01-05 16:13:24.051 ISO    Establish CIS            : xx:xx:xx:xx:dc:71 handle:0x0041

Bug: 262646759
Tag: #feature
Test: atest net_test_btm_iso
Test: manual
Change-Id: I08a0c3edadceaa4dc2ed058c2de66b528fa82f67