add a 'links' key to the manifest

[alexanderkjall]

In order to prevent problems with duplicate symbols in the future.

See: https://doc.rust-lang.org/cargo/reference/build-scripts.html#the-links-manifest-key

[anonrig]

Thanks!

[codspeed-hq]

Merging this PR will not alter performance

✅ 16 untouched benchmarks

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_{Comparing alexanderkjall:add-links-to-manifest (ed01a3a) with main (a883fb8)}