Add Support for Levoit Superior 6000S Smart Evaporative Humidifier

[adamckbatchelor]

As title says, add support for the Levoit Superior 6000S Smart Evaporative Humidifier (Model Number: LEH-S601S-WUS)

Currently not detected by the Home Assistant HACS Vesync integration.

[tkamenick]

I want support for this model as well. I was struggling to get the request capture working, but finally got it figured out today and quickly added support for most of the api surface. I'm still working on adding a few of the write apis and will submit a PR when finished.

[webdjoe]

@tkamenick thank you