v1.2.0

Hardening release for the camera paths introduced in 1.1.0.

Sensor orientation: MrzImage factories now take the clockwise rotation cameras report for raw buffers, for example MrzImage.FromNv21(buffer, width, height, 0, rotationDegrees). SingleFrame mode does not search orientations, so sideways preview buffers needed this to be readable at all.

Fixes: blank frames no longer pay a wasted tilt retry (the skew estimator's tie handling let the first angle win on featureless frames); the tilt rescue rotates the capped working image instead of full resolution photos; rescued reads map their region back to original image coordinates; the glare hint requires hard clipping so white paper does not trip it; CaptureHints is defensively copied.