Add MG6250 support
Hello all,

I posted in issue #183 but as it's closed I'm not sure if someone read it. So here it goes.

Considering that the project [bmpc/mg6250_mqtt](https://github.com/bmpc/mg6250_mqtt/blob/master/README.md) has decoded the protocol to the point of being able to receive event messages, would it be possible to use that knowledge in order to add limited support to MG6250 in PAI?

Thank you.
Tales

