admin: Relicense code under Apache 2.0 (#3966) #4366

Job	Run time
windows-2019 VS2019	52m 37s
macos-11 appleclang13/C++17 py3.9 MacOS-11 boost1.76 exr3.1 ocio2.1	25m 7s
macos-12 appleclang13/C++20 py3.10 MacOS-12 boost1.76 exr3.1 ocio2.1	31m 22s
macos-13 appleclang14/C++20 py3.11 MacOS-13 boost1.76 exr3.1 ocio2.1	17m 39s
Ubuntu latest releases gcc11 C++17 avx2 exr3.1 ocio2.2	17m 31s
Ubuntu bleeding edge gcc12 C++20 py3.10 OCIO/libtiff/exr-master boost1.74 avx2	23m 6s
Ubuntu clang14 C++20 avx2 exr3.1 ocio2.1	18m 54s
Ubuntu debug gcc7/C++14, sse4.2, exr2.4	16m 19s
Ubuntu gcc8 C++17 avx exr2.5	15m 47s
Ubuntu static libs gcc7 C++14 exr2.4	18m 37s
VFX2019 gcc6/C++14 py2.7 boost1.66 exr2.3 ocio1.1	16m 56s
VFX2020 gcc6/C++14 py3.7 boost1.70 exr2.4 ocio1.1	17m 21s
VFX2021 gcc9/C++17 py3.7 boost1.73 exr2.5 ocio2.0	15m 35s
VFX2021 clang10/C++14 avx2 exr2.5 ocio2.0	14m 11s
VFX2022 gcc9/C++17 py39 boost1.76 exr3.1 ocio2.1	15m 55s
VFX2022 clang13/C++17 py39 avx2 exr3.1 ocio2.1	15m 7s
VFX2022 icc/C++17 py3.9 boost1.76 exr3.1 ocio2.1 qt5.15	27m 35s
VFX2022 icx/C++17 py3.9 boost1.76 exr3.1 ocio2.1 qt5.15	20m 53s
VFX2022 sanitizers	41m 8s
VFX2023 gcc11/C++17 py3.10 boost1.80 exr3.1 ocio2.2	18m 24s
VFX2019 oldest/hobbled gcc6.3/C++14 py2.7 boost-1.66 exr-2.3 no-sse no-ocio	22m 25s
VFX2022 clang-format	5m 28s
	7h 47m 57s

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