feat: tedge cert create use HSM configuration

[Bravo555]

TODO

• handle scenario when there's no key on the HSM
• handle other errors (tedge-p11-server errors, etc.)

Proposed changes

Make tedge cert create command use the current HSM configuration, i.e. if we're currently using a PKCS11-based private key, sign the self-signed certificate using that key. Otherwise the certificate is broken as it's signed with a different private key that doesn't correspond to the public key info in the certificate.

Normally tedge cert create persists to disk newly generated certificate and the private key, but now, if already existing PKCS11-based private key is used, the private key is not persisted (because it can't be).

Types of changes

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Improvement (general improvements like code refactoring that doesn't explicitly fix a bug or add any new functionality)
• Documentation Update (if none of the other choices apply)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Paste Link to the issue

• tedge cert create should use HSM configuration #3890

Checklist

• I have read the CONTRIBUTING doc
• I have signed the CLA (in all commits with git commit -s. You can activate automatic signing by running just prepare-dev once)
• I ran just format as mentioned in CODING_GUIDELINES
• I used just check as mentioned in CODING_GUIDELINES
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)

Further comments

[codecov]

Codecov Report

❌ Patch coverage is 20.66116% with 96 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
crates/common/certificate/src/cryptoki.rs	0.00%	87 Missing ⚠️
crates/core/tedge/src/cli/certificate/create.rs	75.86%	3 Missing and 4 partials ⚠️
crates/common/certificate/src/lib.rs	0.00%	2 Missing ⚠️

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[github-actions]

Robot Results

✅ Passed	❌ Failed	⏭️ Skipped	Total	Pass %	⏱️ Duration
755	0	3	755	100	2h24m45.101998999s