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.

.gitignore

@@ -28,4 +28,8 @@ seed-data/cert-bund/**/*.sha256
 
 out/offline-kit/web/**/*
 src/StellaOps.Web/node_modules/**/*
-src/StellaOps.Web/.angular/**/*
+src/StellaOps.Web/.angular/**/*
+**/node_modules/**/*
+node_modules
+node_modules
+node_modules