Feature Request / Support for Tilt/Lamellas on Iluminize 5128.10 (Zigbee Roller Blind/Shutter Switch)

Is your feature request related to a problem? Please describe

Hello everyone,
I am using the Iluminize 5128.10 cover/blind actuator with Zigbee2MQTT, and it works great for basic up/down position control (0–100%). However, it currently exposes no control for slat tilt (lamellas).
Is it possible to implement support for tilt/lamella control for this device model, or does the firmware/cluster implementation strictly limit it to basic roller blind positioning?
Device details:
Model: 5128.10 (Iluminize)
Current exposed features: Position, state, motor direction, etc. (no tilt)
Any feedback or guidance on whether a custom converter or native support can be added would be highly appreciated. Thank you!

Describe the solution you'd like

Add support for slat tilt (lamella control) for the Iluminize 5128.10 cover/blind actuator. Currently, the device only exposes basic up/down position control (0–100%), but lacks tilt capabilities.

Describe alternatives you've considered

Using external time-based cover integrations in Home Assistant as a workaround, but native support in Zigbee2MQTT would be ideal.

Additional context

Device model: Iluminize 5128.10 (Zigbee blind/shutter switch).

No file, test, or entry point is named. Start by checking the existing device support for the Iluminize 5128.10 and verifying whether its firmware or Zigbee clusters expose tilt data; done means native slat-tilt control is available alongside position control.