feat: implement interactive authorization flow

[nanderstabel]

Description of change

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Links to any relevant issues

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How the change has been tested

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Definition of Done checklist

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• I have followed the contribution guidelines for this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• 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

[codecov-commenter]

Codecov Report

❌ Patch coverage is 60.10101% with 79 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
oid4vci/src/wallet/mod.rs	0.00%	61 Missing ⚠️
oid4vci/src/errors.rs	0.00%	16 Missing ⚠️
oid4vci/src/interactive_authorization_request.rs	97.56%	1 Missing ⚠️
oid4vci/src/interactive_authorization_response.rs	98.75%	1 Missing ⚠️

Files with missing lines	Coverage Δ
oid4vci/src/interactive_authorization_request.rs	97.56% <97.56%> (ø)
oid4vci/src/interactive_authorization_response.rs	98.75% <98.75%> (ø)
oid4vci/src/errors.rs	25.17% <0.00%> (-3.28%)	⬇️
oid4vci/src/wallet/mod.rs	83.19% <0.00%> (-12.06%)	⬇️

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