Add PGO-optimized wheels #121

Job	Run time
build-sdist	10s
Build on ubuntu (x86_64 - auto)	1m 35s
Build on ubuntu (aarch64 - auto)	3m 34s
Build on macos (x86_64 - auto)	2m 58s
PGO build on ubuntu-latest / 3.7	4m 22s
Build on macos (aarch64 - auto)	2m 57s
Build on windows (x86_64 - auto)	2m 56s
Build on windows (i686 - auto)	3m 48s
Build on windows (aarch64 - auto)	4m 25s
Build on ubuntu (i686 - auto)	5m 26s
Build on ubuntu (armv7 - auto)	3m 1s
Build on ubuntu (ppc64le - auto)	2m 56s
Build on ubuntu (s390x - auto)	3m 51s
Build on ubuntu (x86_64 - musllinux_1_1)	3m 12s
Build on ubuntu (aarch64 - musllinux_1_1)	3m 12s
check	15s
Release	0s
	48m 38s

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