feat(rust): Implement RustCargoLockParser and RustFingerprintScanner

- Added RustCargoLockParser to parse Cargo.lock files and extract package information.
- Introduced RustFingerprintScanner to scan for Rust fingerprint records in JSON files.
- Created test fixtures for Rust language analysis, including Cargo.lock and fingerprint JSON files.
- Developed tests for RustLanguageAnalyzer to ensure deterministic output based on provided fixtures.
- Added expected output files for both simple and signed Rust applications.

src/StellaOps.Excititor.Export.Tests/ExportEngineTests.cs

@@ -290,7 +290,7 @@ public sealed class ExportEngineTests
             return ValueTask.FromResult(Response);
         }
 
-        public ValueTask<VexAttestationVerification> VerifyAsync(VexAttestationRequest request, CancellationToken cancellationToken)
+        public ValueTask<VexAttestationVerification> VerifyAsync(VexAttestationVerificationRequest request, CancellationToken cancellationToken)
             => ValueTask.FromResult(new VexAttestationVerification(true, ImmutableDictionary<string, string>.Empty));
     }