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.Surface.Env/ServiceCollectionExtensions.cs

@@ -0,0 +1,19 @@
+using Microsoft.Extensions.DependencyInjection;
+
+namespace StellaOps.Scanner.Surface.Env;
+
+public static class ServiceCollectionExtensions
+{
+    public static IServiceCollection AddSurfaceEnvironment(
+        this IServiceCollection services,
+        Action<SurfaceEnvironmentOptions>? configure = null)
+    {
+        if (services is null)
+        {
+            throw new ArgumentNullException(nameof(services));
+        }
+
+        services.AddSingleton<ISurfaceEnvironment>(sp => SurfaceEnvironmentFactory.Create(sp, configure));
+        return services;
+    }
+}