Correct value types for Mi air purifier 4 COMPACT
Hi!
Thank you very much for the plugin!
May I request some small improvements?
I'm using xiaomi.airp.cpa4
When I add Property monitor all values are showing in Luxes instead of RPM, percents and mg/m3
Also fan rpm control slider appears as light dimmer (it works tho)
If there is a way to fix it - that would be great!
Thank you in advance!

```
"propertyControl": [
                        {
                            "property": "custom-service:favorite-level",
                            "name": "1fan speed"
                        }
                    ],
                    "propertyMonitor": [
                        {
                            "property": "environment:pm2.5-density",
                            "name": "1PM2.5 Density\t"
                        },
                        {
                            "property": "filter:filter-life-level",
                            "name": "1Filter life"
                        },
                        {
                            "property": "custom-service:motor-speed-rpm",
                            "name": "1RPM"
                        }
```

<img width="501" alt="Screenshot 2023-12-06 at 03 52 21" src="https://github.com/merdok/homebridge-miot/assets/68347846/55d4de06-51d0-4166-bf25-8388fcc5a91d">
<img width="239" alt="Screenshot 2023-12-06 at 03 52 31" src="https://github.com/merdok/homebridge-miot/assets/68347846/dc1ca184-7fa6-487e-b86f-25eddccd9696">
