Add new Wycheproof test vectors for (X)ChaCha20Poly1305, HMAC-SHA512 and HKDF-HMAC-SHA512

[brycx]

Closes #114

[codecov]

Codecov Report

Merging #116 into master will increase coverage by 0.06%.
The diff coverage is 97.53%.

@@            Coverage Diff             @@
##           master     #116      +/-   ##
==========================================
+ Coverage   97.52%   97.59%   +0.06%     
==========================================
  Files          49       51       +2     
  Lines        6353     6450      +97     
==========================================
+ Hits         6196     6295      +99     
+ Misses        157      155       -2

Impacted Files	Coverage Δ
tests/kdf/mod.rs	100% <100%> (ø)	⬆️
src/hazardous/kdf/hkdf.rs	100% <100%> (ø)	⬆️
tests/mac/rfc_hmac.rs	100% <100%> (ø)	⬆️
tests/kdf/other_hkdf.rs	100% <100%> (ø)	⬆️
tests/mac/mod.rs	100% <100%> (ø)	⬆️
tests/kdf/custom_hkdf.rs	100% <100%> (ø)	⬆️
tests/mac/wycheproof_hmac_sha512.rs	96.15% <100%> (ø)
tests/mac/nist_cavp_hmac.rs	100% <100%> (ø)	⬆️
tests/aead/mod.rs	90.37% <95.83%> (+2.87%)	⬆️
tests/aead/wycheproof_aead.rs	96.15% <96.15%> (ø)
... and 7 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update b1771b9...0637978. Read the comment docs.