feat!: implement support for OCIO NamedTransforms #4

Job	Run time
windows-2019 VS2019	51m 49s
macos-12 appleclang13/C++17 py3.10 MacOS-12	18m 55s
windows-2022 VS2022	1h 4m 9s
VFX2021 gcc9/C++17 py3.7 exr3.1 ocio2.0	13m 46s
macos-13 appleclang14/C++17 py3.11 MacOS-13	23m 31s
Ubuntu latest releases gcc12 C++17 avx2 exr3.2 ocio2.3	6m 43s
VFX2021 clang10/C++17 avx2 exr3.1 ocio2.0	13m 30s
macos-14 appleclang15/C++20 py3.11 MacOS-14-ARM	11m 8s
Ubuntu bleeding edge gcc14 C++20 py3.12 OCIO/libtiff/exr-master avx2	8m 37s
VFX2022 gcc9/C++17 py39 exr3.1 ocio2.1	13m 22s
Ubuntu all local builds gcc12 C++17 avx2 exr3.2 ocio2.3	17m 7s
VFX2022 clang13/C++17 py39 avx2 exr3.1 ocio2.1	12m 1s
Ubuntu clang14 C++20 avx2 exr3.1 ocio2.1	14m 6s
VFX2022 icc/C++17 py3.9 exr3.1 ocio2.1 qt5.15	17m 41s
VFX2022 icx/C++17 py3.9 exr3.1 ocio2.2 qt5.15	13m 54s
Ubuntu debug gcc9/C++17, sse4.2, exr3.1	17m 48s
VFX2022 sanitizers	32m 18s
Ubuntu static libs gcc9 C++17 exr2.4	13m 52s
Ubuntu clang-format	5m 51s
VFX2023 gcc11/C++17 py3.10 exr3.1 ocio2.2	11m 14s
VFX2024 gcc11/C++17 py3.11 exr3.2 ocio2.3	6m 56s
VFX2021 oldest gcc9.3/C++17 py3.7 exr-3.1	17m 4s
VFX2021 hobbled gcc9.3/C++17 py3.7 exr-3.1 no-sse	16m 33s
VFX2023 abi check	5m 50s
	7h 7m 45s

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