Fans are only created for the first thermostat that is found when the home has multiple thermostats
If the home has multiple thermostats, then only the first thermostat has a fan accessory created.

I believe the issue is in `src/Platform.ts`.

This code:

```ts
const thermostatDevice = devices.find(device => device instanceof Thermostat);
 if (thermostatDevice && this.config.showFan) {
     const uuid = this.api.hap.uuid.generate(thermostatDevice + ' Fan');
     deviceInfos.push({
         device: thermostatDevice,
         uuid: uuid,
         category: this.api.hap.Categories.FAN,
         existingAccessory: this.accessories.find(accessory => accessory.UUID === uuid)
     })
 }
```

Should be:

```ts
devices.filter(device => device instanceof Thermostat).forEach(thermostatDevice => {
     if (this.config.showFan) {
         const uuid = this.api.hap.uuid.generate(thermostatDevice + ' Fan');
         deviceInfos.push({
             device: thermostatDevice,
             uuid: uuid,
             category: this.api.hap.Categories.FAN,
             existingAccessory: this.accessories.find(accessory => accessory.UUID === uuid)
         })
     }
 });
```