Provide Icons for fan presets

Since Home Assistant 2024.2 you can add Icons to fan and climate presets, because you can now also add fan presets to the tile card it would help greatly to control the device.

![image](https://github.com/libdyson-wg/ha-dyson/assets/97352673/e39b77cb-9fe3-470c-aa9b-371f7a3cf80c)
