Feature request: support power input sensors in kW

[pjvenda]

Hi, thanks for the great work!

I've started using the add-on, but struggled to get any meaningful information. It turns out that all my power sensors (powerwall) are in kW and there is no way to use them as they are, so I've had to create templates that take the same value *1000.

Not only do I need to wait at least 2 days to be able to use the sensors, but I am missing the entire data set that I could use to feed into the ML forecaster.

My suggestion is to have a switch that enables using sensors in kW, that would just multiply the input by 1000 before using. It's not a big deal, more a nice to have. Surely I'm not the only one to face this type of issue?

Thanks in advance!