Add leather addon #2112

Job	Run time
Windows (windows-2022, Visual Studio 17 2022, Debug, Win32)	10m 34s
Windows (windows-2022, Visual Studio 17 2022, Debug, x64)	10m 54s
Linux (gcc-9, ubuntu-22.04, Debug, 3.16.3, 1.73.0)	10m 58s
Linux (clang, macos-14, Debug)	5m 1s
Linux (clang-12, ubuntu-22.04, Debug, 3.16.3, 1.73.0, true)	11m 7s
Linux (gcc-11, ubuntu-22.04, Debug, 3.22.1, 1.74.0)	11m 6s
Windows (windows-2022, Visual Studio 17 2022, Release, x64)	10m 57s
Windows (windows-2022, Visual Studio 17 2022, Release, Win32)	11m 12s
Linux (gcc-10, ubuntu-22.04, Debug, true)	11m 12s
Linux (gcc-14, ubuntu-24.04, Debug)	9m 12s
Linux (clang-14, ubuntu-22.04, Debug, 3.22.1, 1.74.0, 17)	2m 11s
Linux (clang-21, ubuntu-latest, Debug, true)	3m 20s
Linux (gcc-11, ubuntu-22.04, RelWithDebInfo, 4.1.1, 1.74.0)	11m 5s
Linux (clang-18, ubuntu-24.04, Debug, true)	7m 36s
	2h 6m 25s

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