A new crate for #587 and #778: bytes in, the sensor data out as a neutral
RawImage (samples, CFA, levels, active area, crop, orientation, colour tags,
opcode lists, profile tables), and back for DNG. One Cargo feature per format:
dng (read and write), jxl (JPEG XL DNG), crw (through craft-crw).
The base is LightCraft's crates/raw at 5ff567a4: dng, dngwrite, tiffraw,
unpack, ljpeg, jxl, semantic, preview, the parsing half of opcodes, profile
and gaintable, the model and probe. Demosaicing and everything after it stay
with the develop pipeline.
Ported from PhotoCraft's and FilmCraft's DNG readers, each with a test: the
default crop's per-tag defaults, an unusable crop falling back to the active
area, non-finite white levels, the white default of a linearized image, the
AsShotWhiteXY range, 8-bit-only lossy JPEG, lossy tiles that must cover their
part of the image, and the CinemaDNG frame tags.
