Resolved the issue where captured images were appearing upside down or flipped.
Implemented a final vertical flip on the QImage after reading from the OpenGL
Framebuffer Object (FBO) to ensure correct orientation before sending to Hyperion.
This completes the basic hardware-accelerated scaling pipeline.
This commit confirms that the Wayland-only Hyperion grabber is successfully
capturing frames and sending them to the mock server, which in turn
generates PNG output. This validates the refactoring efforts and the
transition to a Wayland-centric approach.
