Exception when displaying Power load using Plug CLI

[zacharynguyeenx]

Problem: Running the Plug CLI will cause an exception on plug_cli.py:81 when displaying Power load due to PlugStatus.load_power() not available.

Suggestion: get rid of this line or implement PlugStatus.load_power()

[rytilahti]

Currently only powerstrip offers load_power, I think the cli tool should be modified to detect what type of plug device it's accessing and behave accordingly. Similar to what is done in https://github.com/home-assistant/home-assistant/blob/dev/homeassistant/components/switch/xiaomi_miio.py .

[zacharynguyeenx]

Ain't the Plug CLI only be used for plugs? plug_cli.py:56 initializes a Plug and there's no initialization of PowerStrip found in there.

If it's only for plugs then we don't really have to care about detecting its type for now.

[rytilahti]

It would be nice to be able to control also e.g. that powerstrip with the same tool for two reasons: 1) I have not find time to create a generic tool allowing control of all supported devices, and won't be able to do so in the near future, and 2) the interface for plugs and that of the strip share many things in common, so supporting both would not be a big hurdle.