Restructure solution layout by module

src/Policy/StellaOps.Policy.Engine/Services/PolicyEvaluationService.cs

@@ -0,0 +1,26 @@
+using System.Collections.Immutable;
+using StellaOps.Policy.Engine.Compilation;
+using StellaOps.Policy.Engine.Evaluation;
+
+namespace StellaOps.Policy.Engine.Services;
+
+internal sealed class PolicyEvaluationService
+{
+    private readonly PolicyEvaluator evaluator = new();
+
+    public PolicyEvaluationResult Evaluate(PolicyIrDocument document, PolicyEvaluationContext context)
+    {
+        if (document is null)
+        {
+            throw new ArgumentNullException(nameof(document));
+        }
+
+        if (context is null)
+        {
+            throw new ArgumentNullException(nameof(context));
+        }
+
+        var request = new PolicyEvaluationRequest(document, context);
+        return evaluator.Evaluate(request);
+    }
+}