Adding support for energy week and energy month

Add support for energy week and energy month channel.

[VeSync][WIP] First try

This is for testing the binding with other smart plugs then mine.

Update for openHAB 3.4.2

Updated as user has problem with response of the device with hardware version C50 and firmware version 1.71

Initial contribution

First version of the binding

Full Changelog: https://github.com/marcelGoerentz/openhab-addons/commits/v0.1.0