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.Attestation/Verification/VexAttestationVerificationOptions.cs

@@ -0,0 +1,28 @@
+using System;
+
+namespace StellaOps.Excititor.Attestation.Verification;
+
+public sealed class VexAttestationVerificationOptions
+{
+    private TimeSpan _maxClockSkew = TimeSpan.FromMinutes(5);
+
+    /// <summary>
+    /// When true, verification fails if no transparency record is present.
+    /// </summary>
+    public bool RequireTransparencyLog { get; set; } = true;
+
+    /// <summary>
+    /// Allows verification to succeed when the transparency log cannot be reached.
+    /// A diagnostic entry is still emitted to signal the degraded state.
+    /// </summary>
+    public bool AllowOfflineTransparency { get; set; }
+
+    /// <summary>
+    /// Maximum tolerated clock skew between the attestation creation time and the verification context timestamp.
+    /// </summary>
+    public TimeSpan MaxClockSkew
+    {
+        get => _maxClockSkew;
+        set => _maxClockSkew = value < TimeSpan.Zero ? TimeSpan.Zero : value;
+    }
+}