Add support for Levoit Classic 300S Smart Ultrasonic Top-Fill Cool Mist Humidifier in the VeSync integration

Hi Andril,

It’s been a week since our last contact, so just a quick update from me to report that all is well here with the VeSync FormatBCE Integration. Not one error to report. I updated my dashboard to use the services available and except for the occasional response lag, it works perfectly. In addition, a new family member arrived last week, one Levoit Air Purifier LV-PUR131S. Therefore, an additional entity created. No problems encountered and no response lag, but I would have expected a new device plus 1 entity !

Jeff