Feature: experimental meson buildsystem #1821

Job	Run time
build-linux (ubuntu-20.04, focal, clang-15, 12.2.Rel1)	4m 14s
size-diff	46s
build-mingw (windows-2022, ucrt64)	2m 48s
build-linux (ubuntu-20.04, focal, gcc-11, 12.2.Rel1)	3m 47s
build-linux (focal, 96b_carbon	35s
build-mingw (windows-2022, clang64)	2m 43s
build-linux (focal, bluepill	35s
build-linux (focal, f072	54s
build-linux (focal, f3	34s
build-linux (focal, f4discovery	34s
build-linux (focal, hydrabus	39s
build-linux (focal, launchpad-icdi	33s
build-linux (focal, native	35s
build-linux (focal, stlink	30s
build-linux (focal, stlinkv3	39s
build-linux (focal, swlink	37s
	21m 3s

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