Add WASI (WebAssembly) cross compile support #175

Job	Run time
build-test (ubuntu-latest, gcc, amd64)	20m 2s
build-test (ubuntu-latest, gcc, c)	24m 33s
build-test (ubuntu-latest, clang, amd64)	20m 24s
build-test (ubuntu-latest, clang, c)	29m 19s
build-test (ubuntu-latest, clang, llvm)	30m 33s
build-test (macos-13, clang, amd64)	46m 44s
build-test (macos-13, clang, c)	48m 37s
build-test (macos-13, clang, llvm)	51m 29s
build-test (macos-14, clang, c)	24m 28s
build-test (macos-14, clang, llvm)	22m 40s
build-test (windows-latest, gcc, amd64)	42m 46s
build-test (windows-latest, gcc, c)	46m 59s
	6h 48m 34s

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