Feature: experimental meson buildsystem #1641

Job	Run time
build-mingw (windows-2022, ucrt64)	2m 18s
build-mingw (windows-2022, clang64)	3m 8s
build-linux (ubuntu-20.04, focal, clang-15, 12.2.Rel1)	2m 14s
build-linux (ubuntu-20.04, focal, gcc-11, 12.2.Rel1)	1m 41s
build-linux-meson (12.2.Rel1, 96b_carbon)	18s
size-diff	41s
build-linux-meson (12.2.Rel1, bluepill)	14s
build-linux-meson (12.2.Rel1, f072)	21s
build-linux-meson (12.2.Rel1, f3)	18s
build-linux-meson (12.2.Rel1, f4discovery)	16s
build-linux-meson (12.2.Rel1, hydrabus)	11s
build-linux-meson (12.2.Rel1, launchpad-icdi)	22s
build-linux-meson (12.2.Rel1, native)	18s
build-linux-meson (12.2.Rel1, stlink)	17s
build-linux-meson (12.2.Rel1, stlinkv3)	11s
build-linux-meson (12.2.Rel1, swlink)	15s
	13m 3s

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