M30 configure yaml for ESPhome

[pawelb]

I received a new M30 board and CT clamp for testing, and unfortunately the readings are exactly the same, so it’s not a failure of the board or the clamp but simply the poor quality of the device itself ;( On the new device I immediately installed the KCS firmware and it’s the same ;( Overall, if anyone is looking for a measurement device it’s worth looking elsewhere, because I just sank $260 into a paperweight ;((