Add JPEG XL Open/Read support via libjxl #1116

Job	Run time
sdist	28s
Windows AMD64	12m 15s
Windows x86	11m 16s
Windows ARM64	14m 11s
macOS 10.13 x86_64	14m 29s
macOS arm64	14m 22s
manylinux_2_28 x86_64	14m 21s
macOS 10.10 x86_64	1s
manylinux_2_28 aarch64	14m 18s
iOS x86_64 simulator	8m 30s
iOS arm64 device	5m 25s
iOS arm64 simulator	14m 24s
manylinux2014 and musllinux aarch64	14m 20s
manylinux2014 and musllinux x86_64	14m 21s
macOS 10.15 x86_64	14m 22s
Count dists	1s
Upload release to PyPI	1s
Upload wheels to scientific-python-nightly-wheels	1s
	2h 47m 6s

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