Add sample proof bundle configurations and verification script

- Introduced sample proof bundle configuration files for testing, including `sample-proof-bundle-config.dsse.json`, `sample-proof-bundle.dsse.json`, and `sample-proof-bundle.json`.
- Implemented a verification script `test_verify_sample.sh` to validate proof bundles against specified schemas and catalogs.
- Updated existing proof bundle configurations with new metadata, including versioning, created timestamps, and justification details.
- Enhanced evidence entries with expiration dates and hashes for better integrity checks.
- Ensured all new configurations adhere to the defined schema for consistency and reliability in testing.

src/SbomService/StellaOps.SbomService/Models/CatalogRecord.cs

@@ -0,0 +1,15 @@
+namespace StellaOps.SbomService.Models;
+
+/// <summary>
+/// Raw catalog row persisted for the console catalog endpoint.
+/// </summary>
+public sealed record CatalogRecord(
+    string Artifact,
+    string SbomVersion,
+    string Digest,
+    string? License,
+    string Scope,
+    IReadOnlyDictionary<string, string> AssetTags,
+    DateTimeOffset CreatedAt,
+    string ProjectionHash,
+    string EvaluationMetadata);