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/ModelComparisonVoteColumns.razor.cs

@@ -0,0 +1,64 @@
+using AIStudio.Components;
+
+using Microsoft.AspNetCore.Components;
+
+namespace AIStudio.Assistants.ModelComparison;
+
+/// <summary>
+/// Two columns to compare, with the button of each below it and the tie between them: the answers of a run in the
+/// mode Answer Variance, and the chats of a task in the mode Everyday Tasks.
+/// </summary>
+/// <remarks>
+/// Both modes share this layout, so that the user votes the same way in both: the button which chooses a column stands
+/// below it, in a narrow window as well, where the second column moves below the first one.
+/// </remarks>
+public partial class ModelComparisonVoteColumns : MSGComponentBase
+{
+    /// <summary>
+    /// Gets or sets what the left column shows, e.g., the first answer.
+    /// </summary>
+    [Parameter, EditorRequired]
+    public RenderFragment ColumnA { get; set; } = null!;
+
+    /// <summary>
+    /// Gets or sets what the right column shows, e.g., the second answer.
+    /// </summary>
+    [Parameter, EditorRequired]
+    public RenderFragment ColumnB { get; set; } = null!;
+
+    /// <summary>
+    /// Gets or sets the question above the buttons, or an empty text without one.
+    /// </summary>
+    [Parameter]
+    public string Heading { get; set; } = string.Empty;
+
+    /// <summary>
+    /// Gets or sets the text of the button which chooses the left column.
+    /// </summary>
+    [Parameter, EditorRequired]
+    public string ALabel { get; set; } = string.Empty;
+
+    /// <summary>
+    /// Gets or sets the text of the button which chooses the right column.
+    /// </summary>
+    [Parameter, EditorRequired]
+    public string BLabel { get; set; } = string.Empty;
+
+    /// <summary>
+    /// Gets or sets the text of the button which finds both columns equally good.
+    /// </summary>
+    [Parameter, EditorRequired]
+    public string TieLabel { get; set; } = string.Empty;
+
+    /// <summary>
+    /// Gets or sets whether the buttons are disabled, e.g., while the vote is saved.
+    /// </summary>
+    [Parameter]
+    public bool Disabled { get; set; }
+
+    /// <summary>
+    /// Gets or sets what happens when the user votes: COLUMN_A for the left column, COLUMN_B for the right one.
+    /// </summary>
+    [Parameter]
+    public EventCallback<ModelComparisonVote> Vote { get; set; }
+}