to_string supports types with format_as #4642

Job	Run time
build (windows-2019, Win32, v142, 17, Debug)	2m 1s
build (windows-2019, Win32, v142, 17, Release)	3m 51s
build (windows-2019, Win32, v142, 17, -DBUILD_SHARED_LIBS=ON, Debug)	1m 32s
build (windows-2019, Win32, v142, 17, -DBUILD_SHARED_LIBS=ON, Release)	3m 1s
build (windows-2019, x64, v140, 14, Debug)	1m 48s
build (windows-2019, x64, v140, 14, Release)	2m 58s
build (windows-2019, x64, v141, 17, Debug)	2m 32s
build (windows-2019, x64, v141, 17, Release)	4m 18s
build (windows-2019, x64, v142, 17, Debug)	1m 59s
build (windows-2019, x64, v142, 17, Release)	4m 15s
build (windows-2019, x64, v142, 17, -DBUILD_SHARED_LIBS=ON, Debug)	1m 42s
build (windows-2019, x64, v142, 17, -DBUILD_SHARED_LIBS=ON, Release)	3m 25s
build (windows-2019, x64, v142, 20, Debug)	2m 38s
build (windows-2019, x64, v142, 20, Release)	5m 29s
build (windows-2022, x64, v143, Debug, 20)	2m 20s
mingw (mingw64)	5m 58s
mingw (ucrt64)	6m 14s
	56m 1s

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