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/ModelComparisonSeriesChatStore.cs

@@ -0,0 +1,18 @@
+using AIStudio.Chat;
+using AIStudio.Chat.Embedded;
+
+namespace AIStudio.Assistants.ModelComparison;
+
+/// <summary>
+/// Lets the embedded chats of a comparison series live in the folder of the series.
+/// </summary>
+/// <param name="store">The store of the assistant.</param>
+/// <param name="seriesId">The ID of the series.</param>
+public sealed class ModelComparisonSeriesChatStore(ModelComparisonStore store, Guid seriesId) : IEmbeddedChatStore
+{
+    /// <inheritdoc />
+    public Task<ChatThread?> LoadThreadAsync(Guid chatId, CancellationToken token = default) => store.LoadSeriesChatAsync(seriesId, chatId, token);
+
+    /// <inheritdoc />
+    public Task SaveThreadAsync(ChatThread thread, CancellationToken token = default) => store.SaveSeriesChatAsync(seriesId, thread, token);
+}