Add --link-cxx-shared #264

Job	Run time
Windows - Stable (aarch64, non-host)	2m 8s
Linux - Stable (aarch64, non-host)	2m 1s
Linux - Stable (x86_64-musl, non-host)	1m 58s
Linux - Stable (aarch64-musl, non-host)	1m 58s
macOS - Stable (x86_64, non-host)	57s
Windows - MSRV	9m 0s
Linux - MSRV	2m 25s
Linux - Beta	2m 33s
macOS - MSRV	1m 56s
macOS - Beta	2m 20s
macOS - Nightly	2m 2s
macOS - Stable (aarch64)	2m 5s
Windows - Stable (x86_64)	9m 42s
Windows - Beta	9m 18s
Linux - Nightly	2m 24s
Windows - Nightly	8m 52s
Linux - Stable (x86_64)	2m 18s
Create GitHub Release	0s
	1h 3m 57s

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