feat(jpeg): Support reading Ultra HDR images #6574

Job	Run time
windows-2019 VS2019	51m 39s
VFX2021 gcc9/C++17 py3.7 exr3.1 ocio2.0	6m 54s
windows-2022 VS2022	48m 24s
Ubuntu latest releases gcc13 C++20 py3.12 avx2 exr3.3 ocio2.4	7m 22s
VFX2021 clang10/C++17 avx2 exr3.1 ocio2.0	5m 47s
Ubuntu bleeding edge gcc14 C++20 py3.12 OCIO/libtiff/exr-main avx2	6m 8s
VFX2022 gcc9/C++17 py39 exr3.1 ocio2.1	6m 34s
Ubuntu all local builds gcc12 C++17 avx2 exr3.2 ocio2.3	9m 27s
VFX2022 clang13/C++17 py39 avx2 exr3.1 ocio2.1	6m 11s
Ubuntu clang14 C++20 avx2 exr3.1 ocio2.1	8m 39s
VFX2022 icc/C++17 py3.9 exr3.1 ocio2.1 qt5.15	11m 4s
Ubuntu debug gcc9/C++17, sse4.2, exr3.1	13m 27s
VFX2022 icx/C++17 py3.9 exr3.1 ocio2.2 qt5.15	11m 23s
Ubuntu static libs gcc9 C++17 exr2.4	6m 20s
VFX2024 sanitizers	35m 6s
Ubuntu clang-format	8m 38s
VFX2023 gcc11/C++17 py3.10 exr3.1 ocio2.2	6m 56s
VFX2024 gcc11/C++17 py3.11 exr3.2 ocio2.3	8m 17s
VFX2021 oldest gcc9.3/C++17 py3.7 exr-3.1	6m 56s
VFX2021 hobbled gcc9.3/C++17 py3.7 exr-3.1 no-sse	6m 38s
macos-12 appleclang13/C++17 py3.11 MacOS-12	18m 12s
VFX2023 abi check	11m 47s
macos-13 appleclang14/C++17 py3.11 MacOS-13	23m 40s
macos-14 appleclang15/C++20 py3.12 MacOS-14-ARM	7m 43s
	5h 33m 12s

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