Replace the tab key with 4 spaces in olstoy editor #3790

Job	Run time
Ubuntu Debug gcc7/C++17 llvm9 py3.7 oiio2.3 exr2.4 sse4 exr2.4	24m 53s
macos-13 C++17 py3.11 MacOS-13 llvm17	21m 59s
Ubuntu gcc10/C++17 llvm10 oiio-release avx2	8m 20s
VFX2021 gcc9/C++17 llvm11 py3.7 oiio2.4 sse4 batch-b8avx2	13m 10s
macos-14 C++17 py3.11 MacOS-14-ARM llvm17	9m 46s
Ubuntu latest releases gcc11/C++17 llvm16 exr3.2 py3.9 avx2 batch-b16avx512	13m 9s
VFX2022 gcc9/C++17 llvm13 py3.9 exr3.1 oiio-rel avx2	14m 47s
Ubuntu bleeding edge gcc12/C++17 llvm17 oiio/ocio/exr/pybind-main py3.10 avx2 batch-b16avx512	12m 55s
VFX2022 clang12/C++17 llvm12 oiio-main py3.9 avx2 batch-avx512	14m 43s
Ubuntu clang14/C++17 llvm14 py3.8 avx2 batch-b16avx512	14m 51s
VFX2022 gcc9/C++17 llvm11 py3.9 exr3.1 oiio2.3 sse2 batch-b4sse2	14m 47s
Ubuntu clang-format	4m 19s
VFX2022 icc/C++17 llvm14 py3.9 oiio-main avx2	17m 43s
VFX2022 icx/C++17 llvm14 py3.9 oiio2.3 avx2	6h 0m 4s
VFX2023 gcc11/C++17 llvm15 py3.10 oiio-rel avx2	15m 45s
VFX2023 GPU Cuda11 gcc11/C++17 llvm15 py3.10 OIIO-main avx2	4m 9s
VFX2024 gcc11/C++17 llvm17 py3.11 boost1.82 oiio-rel avx2	20m 15s
VFX2021 oldest everything gcc9/C++17 llvm9 py3.7 oiio2.3 no-simd	7m 32s
VFX2022 sanitizers	26m 6s
VFX2023 abi check	8m 47s
	10h 28m 0s

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