feat: Implement Runtime Facts ingestion service and NDJSON reader

- Added RuntimeFactsNdjsonReader for reading NDJSON formatted runtime facts.
- Introduced IRuntimeFactsIngestionService interface and its implementation.
- Enhanced Program.cs to register new services and endpoints for runtime facts.
- Updated CallgraphIngestionService to include CAS URI in stored artifacts.
- Created RuntimeFactsValidationException for validation errors during ingestion.
- Added tests for RuntimeFactsIngestionService and RuntimeFactsNdjsonReader.
- Implemented SignalsSealedModeMonitor for compliance checks in sealed mode.
- Updated project dependencies for testing utilities.

src/Scanner/__Libraries/StellaOps.Scanner.Analyzers.Lang.Deno/DenoAnalyzerPlugin.cs

@@ -0,0 +1,18 @@
+using System;
+using StellaOps.Scanner.Analyzers.Lang;
+using StellaOps.Scanner.Analyzers.Lang.Plugin;
+
+namespace StellaOps.Scanner.Analyzers.Lang.Deno;
+
+public sealed class DenoAnalyzerPlugin : ILanguageAnalyzerPlugin
+{
+    public string Name => "deno";
+
+    public bool IsAvailable(IServiceProvider services) => services is not null;
+
+    public ILanguageAnalyzer CreateAnalyzer(IServiceProvider services)
+    {
+        ArgumentNullException.ThrowIfNull(services);
+        return new DenoLanguageAnalyzer();
+    }
+}