Add autoconf build system for bundled C sources #103

Job	Run time
build-cabal (ubuntu, cabal 3.6.2.0 ghc 8.10.7)	15m 10s
hlint	6s
build-cabal (ubuntu, cabal 3.10.2.0 ghc 9.2.8)	13m 30s
build-cabal (ubuntu, stack 2.13.1)	24m 5s
build-cabal (macOS, cabal 3.6.2.0 ghc 8.10.7)	9m 26s
build-cabal (macOS, cabal 3.10.2.0 ghc 9.2.8)	4m 9s
build-cabal (macOS, stack 2.13.1)	9m 58s
build-cabal (windows, cabal 3.6.2.0 ghc 8.10.7)	9m 13s
build-cabal (windows, cabal 3.10.2.0 ghc 9.2.8)	7m 51s
build-cabal (windows, stack 2.13.1)	15m 59s
	1h 49m 27s

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