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/StellaOps.Bench.ScannerAnalyzers/ScenarioResult.cs

@@ -0,0 +1,24 @@
+using System.Globalization;
+
+namespace StellaOps.Bench.ScannerAnalyzers;
+
+internal sealed record ScenarioResult(
+    string Id,
+    string Label,
+    int SampleCount,
+    double MeanMs,
+    double P95Ms,
+    double MaxMs,
+    int Iterations,
+    double ThresholdMs)
+{
+    public string IdColumn => Id.Length <= 28 ? Id.PadRight(28) : Id[..28];
+
+    public string SampleCountColumn => SampleCount.ToString(CultureInfo.InvariantCulture).PadLeft(5);
+
+    public string MeanColumn => MeanMs.ToString("F2", CultureInfo.InvariantCulture).PadLeft(9);
+
+    public string P95Column => P95Ms.ToString("F2", CultureInfo.InvariantCulture).PadLeft(9);
+
+    public string MaxColumn => MaxMs.ToString("F2", CultureInfo.InvariantCulture).PadLeft(10);
+}