Add support for C loader packages. #644

Job	Run time
MacOS Clang Test (macos-12, debug, without-sanitizer)	2h 18m 23s
MacOS Clang Test (macos-12, debug, address-sanitizer)	2h 37m 59s
MacOS Clang Test (macos-12, debug, thread-sanitizer)	2h 52m 37s
MacOS Clang Test (macos-12, release, without-sanitizer)	2h 26m 41s
MacOS Clang Test (macos-13, debug, without-sanitizer)	2h 26m 38s
MacOS Clang Test (macos-13, debug, address-sanitizer)	2h 3m 8s
MacOS Clang Test (macos-13, debug, thread-sanitizer)	1h 43m 37s
MacOS Clang Test (macos-13, release, without-sanitizer)	1h 45m 13s
MacOS Clang Test (macos-14, debug, without-sanitizer)	1h 12m 12s
MacOS Clang Test (macos-14, debug, address-sanitizer)	1h 1m 4s
MacOS Clang Test (macos-14, debug, thread-sanitizer)	1h 7m 5s
MacOS Clang Test (macos-14, release, without-sanitizer)	42m 23s
MacOS Distributable Dispatch	0s
	22h 17m 0s

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