Use headphones remote control to control playback & volume

I use Shure Aonic 215 in-ear monitors connected to my Pixel 8 Pro via dongle. It would be cool if I could use the controller on my Shure Aonic 215 to start and stop the metronome using the center button of the controller and control volume with the + and - buttons of the controller (or control tempo with +/- buttons).

Cool idea - I think it's technically possible to support this, maybe not much work actually.