Use new libcamera-based stack for Raspberry Pi HQ camera

[kerel-fs]

🐞 Problem

The current Raspberry Pi HQ camera support is built on the legacy raspicam stack built on Broadcom’s proprietary GPU code (in stvid by using picamerax). This stack is not available anymore in Raspberry Pi OS Bullseye by default (and not at all in the 64bit variant). More in the documentation:

• libcamera and the legacy Raspicam camera stack

💡 Possible solution

There is a new libcamera based stack now and it could be used in stvid by using picamera2 (available as a "beta release" currently).