WAL-134 Use sd jwt lib instead of w3c lib

[severinstampler]

Description

Refactoring, to make use of sd-jwt lib for sd-jwt-vc issuance and verification.

Fixes #[issue number]

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Checklist

• I have performed a self-review of my code
• If it is a core feature, I have added thorough tests
• Do we need to implement analytics?
• Will this be part of a product update? If yes, please write one phrase about this update.
• My code follows the style guidelines of this project
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

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

See analysis details on SonarCloud