Add FIPS 203, 204 CAVP test vectors

[jschneider-bensch]

At the moment we test ML-KEM and ML-DSA against test vectors that are generated using a spec-like python implementation.
Now that the standards are published, we should add the official CAVP test vectors.

[franziskuskiefer]

We should also add the wycheproof tests in this or a separate issue (ML-KEM is not yet updated)

• Add ML-DSA test vectors. C2SP/wycheproof#112
• Test vectors for Kyber and ML-KEM. C2SP/wycheproof#110

[franziskuskiefer]

On branch franziskus/ml-kem-acvp I added started adding some of the test vectors. Feel free to continue on that.

[jschneider-bensch]

Took your branch and extended it to encap/decap vectors for ML-KEM in #618