Refactor CS SelectWalkOrder and implement new SelectCSWalkOrder pass #5887

Job	Run time
download-OpenCL-Clang	8s
build-SPIRV-LLVM-Translator (20.04, 14)	12s
build-SPIRV-LLVM-Translator (22.04, 14)	12s
build-SPIRV-LLVM-Translator (22.04, 15, true)	12s
build-IGC (20.04, 14, gcc)	38m 16s
build-IGC (20.04, 14, clang)	26m 26s
build-IGC (22.04, 14, gcc)	30m 22s
build-IGC (22.04, 14, clang)	26m 55s
build-IGC (22.04, 15, gcc, true)	30m 28s
	2h 33m 11s

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