Added the Model Comparison assistant for blind comparisons of two models (#1009)

Co-authored-by: Thorsten Sommer <SommerEngineering@users.noreply.github.com>

app/MindWork AI Studio/Assistants/ModelComparison/ModelComparisonStorageOptions.cs

@@ -0,0 +1,12 @@
+namespace AIStudio.Assistants.ModelComparison;
+
+/// <summary>
+/// Overrides where the Model Comparison assistant stores its files, for tests.
+/// </summary>
+public sealed class ModelComparisonStorageOptions
+{
+    /// <summary>
+    /// Gets or initializes the folder in which the folder modelComparisons is created.
+    /// </summary>
+    public string? DataDirectory { get; init; }
+}