Bluetooth earphone key event detect

Many of our wireless earphones have buttons to control music. Such as double tapping airpods to pause music. 

The bluetooth earphone button does not trigger any key event on android phone, so that autoinput and other events can't capture the button event on bluetooth earphone directly. 

So I wish Tasker can add an event to capture the bluetooth earphone button event, this will allow users make many useful remote control profiles.