Add AVIF plugin (using libavif) #29

Job	Run time
macOS x86_64	48m 47s
sdist	59s
macOS arm64	25m 45s
manylinux2014 and musllinux x86_64	1h 10m 25s
manylinux_2_28 x86_64	39m 43s
Windows x86	9m 30s
Windows AMD64	51m 37s
aarch64 pp39 manylinux2014	3h 7m 22s
aarch64 pp39 manylinux_2_28	3h 46m 19s
aarch64 pp310 manylinux2014	3h 9m 57s
Windows ARM64	5m 43s
aarch64 pp310 manylinux_2_28	3h 26m 2s
aarch64 cp3{9,10,11} manylinux2014	2h 59m 25s
aarch64 cp3{9,10,11} manylinux_2_28	3h 15m 0s
aarch64 cp3{9,10,11} musllinux	3h 19m 8s
aarch64 cp3{12,13} manylinux2014	6m 56s
aarch64 cp3{12,13} manylinux_2_28	3h 33m 3s
aarch64 cp3{12,13} musllinux	3h 2m 40s
Upload wheels to scientific-python-nightly-wheels	0s
Upload release to PyPI	0s
	1d 9h 58m 21s

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