build: add `--shared-nbytes` configure flag #2605

Job	Run time
Build slim tarball	1m 30s
x86_64-darwin: with shared libraries	2h 36m 40s
aarch64-darwin: with shared libraries	2h 3m 34s
x86_64-linux: with shared libraries	2h 27m 33s
aarch64-linux: with shared libraries	2h 20m 52s
	9h 30m 9s

Provide feedback