Add QHY12 support, untested so far
Qhy12 support finalized and stable, color rendering and pixel
remapping look ok.
Some code cleanup
Fixed a memory leak when in color mode
Some code change to avoid a memory leak when ROI/FWHM is used
Discard bad data from camera without stopping the capture thread
Wrong QHY5L-II tranfer size fixed (12Bit mode only)
Temporary (?) deactivate subframe feature for QHY12
Less verbose log for skipped frame data.
Fix for QHY5L-II not returning expected frame size @800x600
Better general behavior when managing frames skip