Add hdkey module

[srasoamiaramanana-ledger]

This PR implements:

• ZIP32 Sapling, Orchard and registered derivations
• BIP32-like derivation with BLS12-377 curve (Aleo)

[codecov-commenter]

Codecov Report

❌ Patch coverage is 50.25063% with 397 lines in your changes missing coverage. Please review.
✅ Project coverage is 41.57%. Comparing base (fcdc6c0) to head (c8845bf).

Files with missing lines	Patch %	Lines
src/bolos/hdkey/src/hdkey_zip32.c	62.42%	70 Missing and 57 partials ⚠️
src/bolos/hdkey/src/hdkey_validate.c	21.96%	94 Missing and 9 partials ⚠️
src/bolos/hdkey/src/hdkey_bip32.c	24.16%	78 Missing and 13 partials ⚠️
src/bolos/os_hdkey.c	0.00%	46 Missing ⚠️
src/bolos/hdkey/src/hdkey_bls12377.c	52.38%	11 Missing and 9 partials ⚠️
src/bolos/hdkey/src/hdkey.c	70.83%	5 Missing and 2 partials ⚠️
src/bolos/cx_utils.c	87.50%	1 Missing and 1 partial ⚠️
src/emulate.c	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #649      +/-   ##
==========================================
+ Coverage   40.99%   41.57%   +0.58%     
==========================================
  Files         131      138       +7     
  Lines       14309    15102     +793     
  Branches     1280     1406     +126     
==========================================
+ Hits         5866     6279     +413     
- Misses       8058     8348     +290     
- Partials      385      475      +90     

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[sonarqubecloud]

Quality Gate passed

Issues
13 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
1.3% Duplication on New Code

See analysis details on SonarQube Cloud