Integrate HITL with Other Channels

I’m currently working in connecting Twilio through the Converse API and everything seems to be working fine. But, I want to be able to integrate HITL in the flow. I know HITL is not currently available in other channels that aren’t Messenger or Web. However, there most be a way to make the HITL module with other channels. Does anyone has an idea on where to start in order to make this possible. I not sure start looking into an existing channel that works with HITL or to start with the HITL the module.