[Feature Request] BK7238 Support

Could you please add support for flashing and configuration extraction of this chip?

Here is firmware and ROM dump for RGBCT Lightbulb:
[RGBCCT-Bulb-BK7238-Factory.zip](https://github.com/user-attachments/files/18303954/RGBCCT-Bulb-BK7238-Factory.zip)
[RGBCCT-Bulb-BK7238-Factory-rom.zip](https://github.com/user-attachments/files/18303996/RGBCCT-Bulb-BK7238-Factory-rom.zip)
