Iso 18013-7 refactor.

[dlongley]

This PR adds some ISO 18013-7 DC API (Annex C and D) support. Ready for merge with additional OID4* 1.0+ updates to be added in the future.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 78.17896% with 139 lines in your changes missing coverage. Please review.
✅ Project coverage is 58.83%. Comparing base (25c30f3) to head (66ab27e).
⚠️ Report is 53 commits behind head on main.

Files with missing lines	Patch %	Lines
lib/oid4vp/hpke.js	73.27%	31 Missing ⚠️
lib/oid4vp/authorizationResponse.js	81.96%	22 Missing ⚠️
lib/util.js	61.53%	20 Missing ⚠️
lib/oid4vp/authorizationRequest.js	0.00%	18 Missing ⚠️
lib/oid4vp/jwt.js	72.72%	18 Missing ⚠️
lib/oid4vp/verifier.js	81.60%	16 Missing ⚠️
lib/oid4vp/mdl.js	91.41%	14 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #67      +/-   ##
==========================================
+ Coverage   54.96%   58.83%   +3.86%     
==========================================
  Files          18       21       +3     
  Lines        3293     3809     +516     
==========================================
+ Hits         1810     2241     +431     
- Misses       1483     1568      +85     

Files with missing lines	Coverage Δ
lib/index.js	100.00% <100.00%> (ø)
lib/oid4vp/index.js	100.00% <100.00%> (ø)
lib/query/presentationExchange.js	88.76% <100.00%> (+0.25%)	⬆️
lib/oid4vp/mdl.js	91.41% <91.41%> (ø)
lib/oid4vp/verifier.js	80.80% <81.60%> (+4.32%)	⬆️
lib/oid4vp/authorizationRequest.js	54.94% <0.00%> (-0.61%)	⬇️
lib/oid4vp/jwt.js	72.72% <72.72%> (ø)
lib/util.js	72.27% <61.53%> (+1.68%)	⬆️
lib/oid4vp/authorizationResponse.js	37.47% <81.96%> (+8.18%)	⬆️
lib/oid4vp/hpke.js	73.27% <73.27%> (ø)

... and 2 files with indirect coverage changes

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