Adds tiled (ZIP16, RLE), tiled mip-mapped (ZIP16, PIZ), decreasing line
order, uncompressed, a uint R/G/B picture and a multi-part file whose first
R/G/B part is depth-named (the planes can't stand in for the image crate's
picture there). The new hashes were taken with main's crates/media/src at
a646bdcc (extracted with git archive) and the same test, before the decode
rework.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>