apps: audio_service: audio_record: Add demo for multi-channel record

Signed-off-by: xychen <xychen@listenai.com>
1 job 于feature/audio-samples in 2 minute 和 32 second (queued for 2 second)
状态 作业 ID 名称 覆盖率
  Ztest
已通过 #64031
zgsz-03 generic
ztest_build_only

00:02:32