Add scheduler tests #64

Job	Run time
Preset: gcc-debug on ubuntu-latest	27s
Unit: Ubuntu GNU 20 Default	52s
CMake: Disable build testing	44s
Preset: gcc-release on ubuntu-latest	17s
Compiler: GNU 14	44s
Unit: Ubuntu GNU 20 MaxSan	1m 15s
CMake: Disable example building	39s
Preset: appleclang-debug on macos-latest	20s
Compiler: GNU 13	31s
Unit: Ubuntu GNU 23 Default	53s
Preset: appleclang-release on macos-latest	20s
Compiler: LLVM 20	1m 21s
Unit: Ubuntu GNU 23 MaxSan	1m 16s
Preset: msvc-debug on windows-latest	1m 9s
Compiler: LLVM 19	1m 12s
Unit: Ubuntu GNU 26 Default	1m 6s
Preset: msvc-release on windows-latest	1m 10s
Compiler: LLVM 18	2m 4s
Unit: Ubuntu GNU 26 MaxSan	1m 14s
Unit: Ubuntu LLVM 20 Default	1m 35s
Unit: Ubuntu LLVM 20 MaxSan	1m 50s
Unit: Ubuntu LLVM 23 Default	1m 33s
Unit: Ubuntu LLVM 23 MaxSan	1m 56s
Unit: Ubuntu LLVM 26 Default	1m 35s
Unit: Ubuntu LLVM 26 MaxSan	1m 48s
Unit: Windows MSVC 20 Default	2m 3s
Unit: Windows MSVC 20 MaxSan	2m 7s
Unit: Windows MSVC 23 Default	1m 48s
Unit: Windows MSVC 23 MaxSan	2m 4s
Unit: Windows MSVC 26 Default	1m 59s
Unit: Windows MSVC 26 MaxSan	2m 3s
Unit: Ubuntu GCC 23 Werror	53s
Unit: Ubuntu GCC 23 Dynamic	45s
create-issue-when-fault	0s
	41m 33s

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