ConstReadonlyavif: numberAVIF container parse; probe answers and decode refuses.
Readonlybmp: numberBMP decode and encode.
Readonlydetect: numberFace detection through an LBP cascade.
Readonlygif: numberGIF decode and encode.
Readonlyicc: numberICC matrix and TRC color management.
Readonlyjpeg: numberJPEG decode and encode, baseline and progressive.
Readonlypng: numberPNG decode and encode.
Readonlysimd: numberSIMD128 was enabled at build time.
Readonlytext: numberFont loading and text drawing.
Readonlytiff: numberTIFF decode and encode.
Readonlywebp: numberWebP decode and encode, lossy and lossless.
Optional features a build may or may not contain, mirroring
enum TinyImageFeature.