Rudder trim is the only one wich can be bind directly in MSFS to a reset function:
controls options/flight control surfaces/control trimming surfaces/reset rudder trim
But you can send commands via SimConnect. I do it with my StreamDeck for ailerons.
Events are:
ELEVATOR_TRIM_SET with param [0]
AILERON_TRIM_SET with param [0]
RUDDER_TRIM_RESET (no param)
or
RUDDER_TRIM_SET with param [0]