Wouldn't something like this be what your looking for . Let zwave turn your regular switches into zwave switches ?
I am looking for the same
https://aeotec.com/z-wave-outlet-socket/
Or this
Enerwave ZWN-RSM1-PLUS Z-Wave Relay, Z-Wave Plus Micro Switch, Smart Hidden Switch Wireless Remote Control to Lights and Ceiling Fans, Neutral Wire Required, Black https://www.amazon.com/dp/B01G7OD1F8/ref=cm_sw_r_cp_apa_i_6BXiDbGZZDZ69