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/ModelComparisonFormat.cs

@@ -0,0 +1,68 @@
+using System.Globalization;
+
+namespace AIStudio.Assistants.ModelComparison;
+
+/// <summary>
+/// Formats the numbers which the Model Comparison assistant shows, in the culture of the active language.
+/// </summary>
+public static class ModelComparisonFormat
+{
+    /// <summary>
+    /// Gets the culture of the active language. Qualified with its namespace because the namespace of the localization
+    /// assistant, AIStudio.Assistants.I18N, hides the class I18N from every assistant.
+    /// </summary>
+    public static CultureInfo Culture => Tools.PluginSystem.I18N.I.Culture;
+
+    /// <summary>
+    /// Gets the English name of the active language, without a region ("German", not "German (Germany)"), for an
+    /// instruction which the models and the judges understand regardless of their own default language. The culture
+    /// carries a region, so its neutral parent names the language alone, except for the invariant culture, which has
+    /// no parent to ask.
+    /// </summary>
+    public static string LanguageName => Culture.IsNeutralCulture || Culture.Equals(CultureInfo.InvariantCulture)
+        ? Culture.EnglishName
+        : Culture.Parent.EnglishName;
+
+    /// <summary>
+    /// Formats seconds with one decimal place, e.g., "2.5 s".
+    /// </summary>
+    /// <param name="seconds">The seconds.</param>
+    /// <returns>The seconds with their unit.</returns>
+    public static string Seconds(double seconds) => $"{seconds.ToString("0.0", Culture)} s";
+
+    /// <summary>
+    /// Formats a duration in seconds.
+    /// </summary>
+    /// <param name="duration">The duration, or null when it is not known.</param>
+    /// <returns>The seconds with their unit, or a dash.</returns>
+    public static string Duration(TimeSpan? duration) => duration is { } value
+        ? Seconds(value.TotalSeconds)
+        : "-";
+
+    /// <summary>
+    /// Formats a duration in minutes with one decimal place, e.g., "12.5 min".
+    /// </summary>
+    /// <param name="duration">The duration, or null when it is not known.</param>
+    /// <returns>The minutes with their unit, or a dash.</returns>
+    public static string Minutes(TimeSpan? duration) => duration is { } value
+        ? $"{value.TotalMinutes.ToString("0.0", Culture)} min"
+        : "-";
+
+    /// <summary>
+    /// Formats a number with one decimal place, e.g., an average.
+    /// </summary>
+    /// <param name="number">The number, or null when it is not known.</param>
+    /// <returns>The number, or a dash.</returns>
+    public static string Decimal(double? number) => number is { } value
+        ? value.ToString("0.0", Culture)
+        : "-";
+
+    /// <summary>
+    /// Formats a share as a whole percentage.
+    /// </summary>
+    /// <param name="share">The share between 0 and 1, or null when it is not known.</param>
+    /// <returns>The percentage, or a dash.</returns>
+    public static string Share(double? share) => share is { } value
+        ? value.ToString("P0", Culture)
+        : "-";
+}