src: implement Windows-1252 encoding support and update related tests #1425

Job	Run time
Build slim tarball	1m 44s
x86_64-linux: with shared libraries	29m 9s
aarch64-darwin: with shared libraries	30m 55s
aarch64-linux: with shared libraries	25m 32s
x86_64-darwin: with shared libraries	48m 35s
	2h 15m 55s

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