Add support for Air Purifier

Please add support for this air purifier. Should also include controls of speed and indication of filter remining and air quality.

Device normal info

• Brand: MEES Smart (according to amazon listing)
• Model: HIMOX-H06

Device info (please complete the following information, which can be found in log): like this: { "active_time": 1623942759, "biz_type": 18, "category": "kj", "create_time": 1623942759, "icon": "smart/icon/ay1527558291729ltDmd/6a64c864651d1cb74cb8b635ebdeb32a.png", "id": "41684530cc50e3ff13a3", "ip": "", "lat": "", "local_key": "", "lon": "", "name": "HIMOX-H06", "online": true, "owner_id": "", "product_id": "sjzyyecfdqwdsofv", "product_name": "HIMOX-H06", "status": [ { "code": "switch", "value": true }, { "code": "fan_speed_enum", "value": "high" }, { "code": "filter", "value": 89 }, { "code": "light", "value": true }, { "code": "filter_reset", "value": false }, { "code": "countdown_left", "value": 0 }, { "code": "air_quality", "value": "medium" } ], "sub": false, "time_zone": "+00:00", "uid": "eu1563450773193otWIB", "update_time": 1625563828, "uuid": "41684530cc50e3ff13a3" },

Device specifications (please complete the following information, which can be found in log): Same device's id, like this: 2021-07-07 13:43:08 DEBUG (SyncWorker_4) [tuya iot] Request: method = GET, url = https://openapi.tuyaeu.com/v1.0/devices/41684530cc50e3ff13a3/specifications, params = None, body = None, headers = {'client_id': 'xxxxxxxx', 'sign': 'xxxxxxx', 'sign_method': 'HMAC-SHA256', 'access_token': 'xxxxxxxx', 't': '1625661788808', 'lang': 'en'} 2021-07-07 13:43:08 DEBUG (SyncWorker_4) [tuya iot] Response: { "result": { "category": "kj", "functions": [ { "code": "switch", "type": "Boolean", "values": "{}" }, { "code": "fan_speed_enum", "type": "Enum", "values": "{"range":["low","mid","high"]}" }, { "code": "light", "type": "Boolean", "values": "{}" }, { "code": "filter_reset", "type": "Boolean", "values": "{}" } ], "status": [ { "code": "switch", "type": "Boolean", "values": "{}" }, { "code": "fan_speed_enum", "type": "Enum", "values": "{"range":["low","mid","high"]}" }, { "code": "filter", "type": "Integer", "values": "{"unit":"％","min":0,"max":100,"scale":0,"step":1}" }, { "code": "light", "type": "Boolean", "values": "{}" }, { "code": "filter_reset", "type": "Boolean", "values": "{}" }, { "code": "countdown_left", "type": "Integer", "values": "{"unit":"min","min":0,"max":480,"scale":0,"step":1}" }, { "code": "air_quality", "type": "Enum", "values": "{"range":["great","medium","severe"]}" } ] }, "success": true, "t": 1625661788845 }