Power metering for Schuko

[jschlyter]

Investigate if power metering for Schuko works as expected (hass-chargeamps/hass-chargeamps#27)

[jschlyter]

@fredriklj please check if you get any readings from the Schuko outlet on your Halo

[elden1337]

i think the cause for this could be that the two switches (on a Halo) don't get a proper unique identifier. They get the same as their sensor from the superclass:

https://github.com/kirei/hass-chargeamps/blob/b99ed088c539cf6d0eb56bfb08e3cef19b466151/custom_components/chargeamps/init.py#L410