Read SWO trace status.

DAP_SWO_Status (0x1B):

Reads the SWO trace status.

DAP_SWO_Status Request:

| BYTE |
> 0x1B |
|******|

DAP_SWO_Status Response:

| BYTE | BYTE         | WORD        |
< 0x1B | Trace Status | Trace Count |
|******|**************|*************|

Trace Status:
- Bit 0: Trace Capture (1 - active, 0 - inactive)
- Bit 6: Trace Stream Error
- Bit 7: Trace Buffer Overrun
Trace Count: Number of bytes in Trace Buffer (not yet read)