Fix issue 150

[leo-barnes]

Microsoft/Chimera_cropped.avif:

• Truncated crop to integers
• Stripped optional config OBUs

Link-U/kimono*.crop.avif:

• Reordered property associations so 'ispe' comes before transform properties
• Rounded up crop to integers (that matches the PNGs)
• Added NCLX with values 1,13,9,0
• Stripped optional config OBUs

This closes issue #150

[leo-barnes]

@wantehchang @y-guyon
Do you want to sanity check the files? If not I'll merge this PR tomorrow.

[y-guyon]

I ran avifdec at AOMediaCodec/libavif@3e4b9c8 compiled with

    "AVIF_ENABLE_EXPERIMENTAL_YCGCO_R": "ON",
    "AVIF_ENABLE_EXPERIMENTAL_GAIN_MAP": "ON",
    "AVIF_ENABLE_EXPERIMENTAL_MINI": "ON",
    "AVIF_ENABLE_EXPERIMENTAL_SAMPLE_TRANSFORM": "ON",

It fails on kimono.crop.avif, kimono.mirror-vertical.rotate270.crop.avif and Chimera_8bit_cropped_480x256.avif with the error:

ERROR: Failed to parse image: BMFF parsing failed
Diagnostics:
 * [Strict] crop rect Y offset must be even due to this image's YUV subsampling

It works on Chimera_10bit_cropped_to_1920x1008.avif.

It fails on Chimera_10bit_cropped_to_1920x1008_with_HDR_metadata.avif with the error:

Conversion to RGB failed

[maryla-uc]

I looked into Chimera_10bit_cropped_to_1920x1008_with_HDR_metadata.avif which gives the Conversion to RGB failed error. This is because the image has matrix coeffecients value 10, i.e. AVIF_MATRIX_COEFFICIENTS_BT2020_CL, which is currently unsupported https://github.com/AOMediaCodec/libavif/blob/3e4b9c88761aab919cbf98377447b7315dd834b3/src/reformat.c#L108
avifdec tries to convert from YUV to RGB to save the output image and fails.
So the file is valid, it's just that avifdec doen't handle it.