Add Policy DSL Validator, Schema Exporter, and Simulation Smoke tools

- Implemented PolicyDslValidator with command-line options for strict mode and JSON output.
- Created PolicySchemaExporter to generate JSON schemas for policy-related models.
- Developed PolicySimulationSmoke tool to validate policy simulations against expected outcomes.
- Added project files and necessary dependencies for each tool.
- Ensured proper error handling and usage instructions across tools.

tmp/reflect/Program.cs

@@ -0,0 +1,13 @@
+using System;
+using System.Linq;
+using System.Reflection;
+
+var assembly = Assembly.Load("RoaringBitmap");
+foreach (var type in assembly.GetTypes().OrderBy(t => t.FullName))
+{
+    Console.WriteLine(type.FullName);
+    foreach (var method in type.GetMethods(BindingFlags.Public | BindingFlags.Static | BindingFlags.Instance | BindingFlags.DeclaredOnly))
+    {
+        Console.WriteLine($"  {method.ReturnType.Name} {method.Name}({string.Join(", ", method.GetParameters().Select(p => p.ParameterType.Name + " " + p.Name))})");
+    }
+}