Provide an ABI to enable projects written in other languages to use nigiri as a lib #533

Job	Run time
formatting	45s
macos (macos-x86_64, On)	11m 37s
linux (linux-amd64-release, linux-amd64)	31s
msvc (Debug)	3m 19s
macos (macos-arm64)	17m 23s
linux (linux-x86-release, linux-x86)	29s
msvc (Release)	2m 38s
linux (linux-arm-release, linux-arm, qemu-arm-static)	32s
linux (linux-arm64-release, linux-arm64, qemu-aarch64-static)	32s
linux (clang-tidy)	5m 20s
linux (linux-sanitizer)	39s
linux (linux-debug, valgrind --leak-check=full --error-exitcode=1)	1m 1s
	44m 46s

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