Make NativeAPI wan

**Describe the problem you have/What new integration you would like**
I will really enjoy the possibilities of setupping, and using, the nativeAPI of esphome, not only in the lan, but also outside in the wan, using public ip and opening a port on the router. Is it possible to be added?

**Please describe your use case for this integration and alternatives you've tried:**
It can be usefull if i have a sensor or something else not near my home like in a field, or another house, or in a garage. So i can use nativeapi anyway from everywhere with a internet connection.
i used mqtt protocal as a workaround but the native api is more easy to use and mqtt doesnt work in the esphome homeassistant addon, it is shown as offline and i cant upload ota
**Additional context**