Change fan control to be a slider instead of multiple switches
Currently if fan speed controls are enabled, they show up as independent switches for each fan speed.  While functional, is far from ideal user experience.

Proposing merging the independent speed switches into a single standard fan speed controller as is done with all HomeKit enabled fans.

This can be done either with a percentage based fan speed controller as was done in this plugin https://github.com/torifat/xiaomi-mi-air-purifier

Or alternatively with incremental speed adjustments as done here https://github.com/AMoo-Miki/homebridge-tuya-lan/pull/148#issuecomment-575882661

Either of these solutions would be significantly more elegant and user friendly than having multiple independent single purpose switches.