add meson instructions to usage docs #4866

Job	Run time
mingw (mingw64)	7m 19s
build (windows-2019, Win32, v142, 17, Debug)	2m 50s
mingw (ucrt64)	8m 39s
build (windows-2019, Win32, v142, 17, Release)	3m 19s
build (windows-2019, Win32, v142, 17, -DBUILD_SHARED_LIBS=ON, Debug)	2m 37s
build (windows-2019, Win32, v142, 17, -DBUILD_SHARED_LIBS=ON, Release)	3m 14s
build (windows-2019, x64, v140, 14, Debug)	2m 36s
build (windows-2019, x64, v140, 14, Release)	3m 25s
build (windows-2019, x64, v141, 17, Debug)	3m 0s
build (windows-2019, x64, v141, 17, Release)	5m 38s
build (windows-2019, x64, v142, 17, Debug)	2m 44s
build (windows-2019, x64, v142, 17, Release)	3m 21s
build (windows-2019, x64, v142, 17, -DBUILD_SHARED_LIBS=ON, Debug)	2m 34s
build (windows-2019, x64, v142, 17, -DBUILD_SHARED_LIBS=ON, Release)	3m 58s
build (windows-2019, x64, v142, 20, Debug)	2m 28s
build (windows-2019, x64, v142, 20, Release)	5m 43s
build (windows-2022, x64, v143, Debug, 20)	2m 54s
	1h 6m 19s

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