Add generating Chimera certs

[Yu-Ma28051503]

The following items have not yet been implemented,

• Smallstack macro
• test script

[wolfSSL-Bot]

Can one of the admins verify this patch?

[JacobBarthelmeh]

Ok to test Jenkins

[JacobBarthelmeh]

The FIPS CI failure is due to more restrictive algorithms now. Removing the use of DES and causing decryption of DES encrypted keys to fail. This PR (#183) adjusts the test cases to account for that.

[Copilot]

Pull Request Overview

This PR adds support for generating Chimera certificates, which implement dual-algorithm cryptography combining traditional ECC with post-quantum ML-DSA signatures. The implementation includes new command-line options, key generation functionality for ML-DSA, and a comprehensive certificate generation function that creates certificates with dual cryptographic signatures.

• Adds ML-DSA key generation capabilities alongside existing Dilithium support
• Implements Chimera certificate generation with dual ECC/ML-DSA signatures
• Extends CA setup with new command-line options for alternate keys and extended signing modes

Reviewed Changes

Copilot reviewed 10 out of 10 changed files in this pull request and generated 7 comments.

Show a summary per file

File	Description
wolfclu/x509/clu_x509_sign.h	Adds function declaration for Chimera certificate generation
wolfclu/genkey/clu_genkey.h	Adds ML-DSA key generation function declaration with documentation
wolfclu/clu_optargs.h	Defines new command-line option constants for alternate keys and extended signing
tests/x509/expect-purpose.txt	Updates test expectation for TLS Web Client Authentication
src/x509/clu_x509_sign.c	Implements comprehensive Chimera certificate generation function
src/x509/clu_ca_setup.c	Extends CA setup with new options and alternate signing workflow
src/tools/clu_funcs.c	Adds ML-DSA to help documentation
src/genkey/clu_genkey_setup.c	Adds ML-DSA key generation setup and argument parsing
src/genkey/clu_genkey.c	Implements ML-DSA key generation functionality
README.md	Documents Chimera certificate creation workflow with examples

[JacobBarthelmeh]

@Yu-Ma28051503 please assign to wolfSSL-bot or ping me on slack when ready for a re-review.

[JacobBarthelmeh]

Thanks for adding the test cases! Please resolve the CI reports.