Build and Tests

`to_chars`: migrating from custom switch to `__cpp_lib_to_chars` #140

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Run time

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Job	Run time
Generate job matrix	4s
Linux GCC 11	1m 24s
Linux Clang 14	1m 55s
macOS apple-clang 14.3.1	2m 6s
Windows VS2022	2m 34s
	8m 3s