Allow production and consumption to use native sensors unit measure (i.e. kW instead of W)

[Dieghito72]

Is your feature request related to a problem? Please describe. No

Describe the solution you'd like Actually the values from production and consumption sensors must be expressed in Watt, but I have entities (directly from inverter) that are exposed as kilowatt.

Describe alternatives you've considered I know I can create two helper for the conversion.

Additional context