All versions of AirReps156X - Airoha control a

1. Added NVROM flashing support, refer to https://github.com/AirReps/NVROM 2. Updated status messages. This update adds support for NVROM files (.nvr) used to flash updates to certain airoha headphones. Flying Tiger's V4.5 is currently the only rep that uses this format, but we hope this expands soon, as the files can be as small as 53B depending on what functions are updated, not requiring to reinstall the firmware, just modifying it!