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.

docs/schemas/policy-diff-summary.schema.json

@@ -0,0 +1,71 @@
+{
+  "$schema": "http://json-schema.org/draft-04/schema#",
+  "title": "PolicyDiffSummary",
+  "type": "object",
+  "additionalProperties": false,
+  "properties": {
+    "SchemaVersion": {
+      "type": "string"
+    },
+    "Added": {
+      "type": "integer",
+      "format": "int32"
+    },
+    "Removed": {
+      "type": "integer",
+      "format": "int32"
+    },
+    "Unchanged": {
+      "type": "integer",
+      "format": "int32"
+    },
+    "BySeverity": {
+      "type": "object",
+      "additionalProperties": {
+        "$ref": "#/definitions/PolicyDiffSeverityDelta"
+      }
+    },
+    "RuleHits": {
+      "type": "array",
+      "items": {
+        "$ref": "#/definitions/PolicyDiffRuleDelta"
+      }
+    }
+  },
+  "definitions": {
+    "PolicyDiffSeverityDelta": {
+      "type": "object",
+      "additionalProperties": false,
+      "properties": {
+        "Up": {
+          "type": "integer",
+          "format": "int32"
+        },
+        "Down": {
+          "type": "integer",
+          "format": "int32"
+        }
+      }
+    },
+    "PolicyDiffRuleDelta": {
+      "type": "object",
+      "additionalProperties": false,
+      "properties": {
+        "RuleId": {
+          "type": "string"
+        },
+        "RuleName": {
+          "type": "string"
+        },
+        "Up": {
+          "type": "integer",
+          "format": "int32"
+        },
+        "Down": {
+          "type": "integer",
+          "format": "int32"
+        }
+      }
+    }
+  }
+}