Add audio mode to initiator for DAT tape drives

Adds sequential device (tape drive) support to initiator mode,
enabling audio DAT tape reading on DDS drives. Includes SCSI
tape commands (rewind, locate, read position, mode select/sense),
audio frame metadata tracking, and interpolation error detection.

Based on #157

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: 2 people