Decode and expose fan speed capabilities

[mill1000]

Based on reference code, the fan speed capability can be decoded to indicate which discrete fan speeds are actually supported (and possibly indicate if custom speeds are supported)

[mill1000]

Of my devices, one is capable of arbitrary fan speeds, the other only supports low, med, high, auto. Their fan speed capabilities are 1 and 5, respectively.

Based on the decoding map from the plugin. I am led to believe that isNopolar property indicates if a fan is capability of arbitrary fan speeds, and otherwise the type array indicates the supported modes.

var windMap = {
    "0": { //-1
        isNopolar: false,
        type: []
    },
    "1": {
        isNopolar: true,
        type: []
    },
    "2": { //-1
        isNopolar: false,
        type: []
    },
    "3": {
        isNopolar: false,
        type: [_Data.CMD.WINDSPEED_LOW, _Data.CMD.WINDSPEED_HIGH]
    },
    "4": {
        isNopolar: false,
        type: [_Data.CMD.WINDSPEED_LOW, _Data.CMD.WINDSPEED_HIGH, _Data.CMD.WINDSPEED_AUTO]
    },
    "5": {
        isNopolar: false,
        type: [_Data.CMD.WINDSPEED_LOW, _Data.CMD.WINDSPEED_MID, _Data.CMD.WINDSPEED_HIGH, _Data.CMD.WINDSPEED_AUTO]
    },
    "6": {
        isNopolar: false,
        type: [_Data.CMD.WINDSPEED_MUTE, _Data.CMD.WINDSPEED_LOW, _Data.CMD.WINDSPEED_MID, _Data.CMD.WINDSPEED_HIGH, _Data.CMD.WINDSPEED_AUTO]
    },
    "7": {
        isNopolar: false,
        type: [_Data.CMD.WINDSPEED_LOW, _Data.CMD.WINDSPEED_MID, _Data.CMD.WINDSPEED_HIGH]
    }
};