feat: Add RustFS artifact object store and migration tool

- Implemented RustFsArtifactObjectStore for managing artifacts in RustFS.
- Added unit tests for RustFsArtifactObjectStore functionality.
- Created a RustFS migrator tool to transfer objects from S3 to RustFS.
- Introduced policy preview and report models for API integration.
- Added fixtures and tests for policy preview and report functionality.
- Included necessary metadata and scripts for cache_pkg package.

bench/Scanner.Analyzers/config.json

@@ -35,11 +35,20 @@
       ]
     },
     {
-      "id": "python_site_packages_walk",
-      "label": "Python site-packages dist-info crawl",
-      "root": "samples/runtime/python-venv/lib/python3.11/site-packages",
-      "matcher": "**/*.dist-info/METADATA",
-      "parser": "python"
-    }
-  ]
-}
+      "id": "python_site_packages_scan",
+      "label": "Python analyzer on sample virtualenv",
+      "root": "samples/runtime/python-venv",
+      "analyzers": [
+        "python"
+      ]
+    },
+    {
+      "id": "python_pip_cache_fixture",
+      "label": "Python analyzer verifying RECORD hashes",
+      "root": "src/StellaOps.Scanner.Analyzers.Lang.Python.Tests/Fixtures/lang/python/pip-cache",
+      "analyzers": [
+        "python"
+      ]
+    }
+  ]
+}