Add Authority Advisory AI and API Lifecycle Configuration

- Introduced AuthorityAdvisoryAiOptions and related classes for managing advisory AI configurations, including remote inference options and tenant-specific settings.
- Added AuthorityApiLifecycleOptions to control API lifecycle settings, including legacy OAuth endpoint configurations.
- Implemented validation and normalization methods for both advisory AI and API lifecycle options to ensure proper configuration.
- Created AuthorityNotificationsOptions and its related classes for managing notification settings, including ack tokens, webhooks, and escalation options.
- Developed IssuerDirectoryClient and related models for interacting with the issuer directory service, including caching mechanisms and HTTP client configurations.
- Added support for dependency injection through ServiceCollectionExtensions for the Issuer Directory Client.
- Updated project file to include necessary package references for the new Issuer Directory Client library.

src/Scanner/__Libraries/StellaOps.Scanner.EntryTrace/EntryTraceResult.cs

@@ -0,0 +1,32 @@
+using System.Collections.Immutable;
+
+namespace StellaOps.Scanner.EntryTrace;
+
+public sealed record EntryTraceResult(
+    string ScanId,
+    string ImageDigest,
+    DateTimeOffset GeneratedAtUtc,
+    EntryTraceGraph Graph,
+    ImmutableArray<string> Ndjson);
+
+public interface IEntryTraceResultStore
+{
+    Task StoreAsync(EntryTraceResult result, CancellationToken cancellationToken);
+
+    Task<EntryTraceResult?> GetAsync(string scanId, CancellationToken cancellationToken);
+}
+
+internal sealed class NullEntryTraceResultStore : IEntryTraceResultStore
+{
+    public Task StoreAsync(EntryTraceResult result, CancellationToken cancellationToken)
+    {
+        ArgumentNullException.ThrowIfNull(result);
+        return Task.CompletedTask;
+    }
+
+    public Task<EntryTraceResult?> GetAsync(string scanId, CancellationToken cancellationToken)
+    {
+        ArgumentException.ThrowIfNullOrWhiteSpace(scanId);
+        return Task.FromResult<EntryTraceResult?>(null);
+    }
+}