IOS: Bluetooth Camera Shutter Button for Power ups

I run Zwift ton my iPad Pro and I would like to be able to use a bluetooth camera shutter button to activate power ups in game.

I like the idea of having a button on my drops or handlebar to active power ups. (Kinda like a Di2 button)

I currently have a Satechi Multimedia remote (play/pause, Volume up/down, Prev/next), a Moovie camera shutter button, and NIU button. (Both are 1 button only, can detect multiple presses)

I don’t always run the companion app, but ideally this could be applied to Zwift primary app without companion tuning, or the companion app as an extra activation mechanism.