crypto: support Ed448 and ML-DSA context in node:crypto and Web Cryptography

[panva]

This PR adds the option to define a context option on the key input for node:crypto sign() and verify() as well as enables the context option on the ContextParams WebIDL dictionary for use with Ed448 and ML-DSA algorithms in Web Cryptography.

The option specifies the optional context to differentiate signatures generated for different purposes with the same key.

[nodejs-github-bot]

Review requested:

• @nodejs/crypto
• @nodejs/security-wg
• @nodejs/web-infra

[codecov]

Codecov Report

❌ Patch coverage is 78.16092% with 19 lines in your changes missing coverage. Please review.
✅ Project coverage is 89.86%. Comparing base (d30090b) to head (050c56a).
⚠️ Report is 3 commits behind head on main.

Files with missing lines	Patch %	Lines
src/crypto/crypto_sig.cc	70.27%	7 Missing and 4 partials ⚠️
lib/internal/crypto/sig.js	82.60%	4 Missing ⚠️
lib/internal/crypto/webidl.js	80.95%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #59570      +/-   ##
==========================================
+ Coverage   89.74%   89.86%   +0.12%     
==========================================
  Files         667      667              
  Lines      195301   195385      +84     
  Branches    38261    38362     +101     
==========================================
+ Hits       175280   175590     +310     
+ Misses      12465    12243     -222     
+ Partials     7556     7552       -4     

Files with missing lines	Coverage Δ
lib/internal/crypto/cfrg.js	96.76% <100.00%> (+<0.01%)	⬆️
lib/internal/crypto/ec.js	96.81% <100.00%> (+0.01%)	⬆️
lib/internal/crypto/ml_dsa.js	94.39% <100.00%> (+0.01%)	⬆️
lib/internal/crypto/rsa.js	94.05% <100.00%> (+0.01%)	⬆️
lib/internal/crypto/util.js	94.84% <100.00%> (-0.01%)	⬇️
src/crypto/crypto_sig.h	63.63% <ø> (ø)
lib/internal/crypto/sig.js	95.66% <82.60%> (-1.02%)	⬇️
lib/internal/crypto/webidl.js	98.25% <80.95%> (-0.49%)	⬇️
src/crypto/crypto_sig.cc	70.82% <70.27%> (+0.07%)	⬆️

... and 49 files with indirect coverage changes

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[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/68806/