Added a SWOT analysis assistant (#1122)

Co-authored-by: hart_s3 <sabrina.hartmann@dlr.de>

app/MindWork AI Studio/Chat/ContentPresentationView.razor.cs

@@ -0,0 +1,63 @@
+using AIStudio.Assistants.SWOTAnalysis;
+
+using Microsoft.AspNetCore.Components;
+
+namespace AIStudio.Chat;
+
+/// <summary>
+/// Shows the structured presentation of a text, or the text itself when it has none.
+/// </summary>
+/// <remarks>
+/// The one place which knows every kind of presentation and the view which shows it. Chats and
+/// assistants render each text through this component, so a new kind needs a case here and in
+/// Read, and nothing else in the chat.
+/// </remarks>
+public partial class ContentPresentationView
+{
+    /// <summary>
+    /// The presentation of the text, if it has one.
+    /// </summary>
+    [Parameter]
+    public ContentPresentation? Presentation { get; set; }
+
+    /// <summary>
+    /// How the text looks without a presentation, and when its data cannot be read.
+    /// </summary>
+    [Parameter]
+    public RenderFragment? ChildContent { get; set; }
+
+    private ContentPresentation? readPresentation;
+    private int readDataHashCode;
+    private object? data;
+
+    #region Overrides of ComponentBase
+
+    protected override void OnParametersSet()
+    {
+        //
+        // Reading the data means deserializing it, so only a new presentation or changed data are
+        // read again; a parent renders far more often than either happens:
+        //
+        var dataHashCode = this.Presentation?.GetDataHashCode() ?? 0;
+        if (ReferenceEquals(this.Presentation, this.readPresentation) && dataHashCode == this.readDataHashCode)
+            return;
+
+        this.readPresentation = this.Presentation;
+        this.readDataHashCode = dataHashCode;
+        this.data = Read(this.Presentation);
+    }
+
+    #endregion
+
+    /// <summary>
+    /// Reads the data of a presentation into the type its view shows.
+    /// </summary>
+    /// <param name="presentation">The presentation to read.</param>
+    /// <returns>The data, or null when there is no presentation or its data cannot be read.</returns>
+    private static object? Read(ContentPresentation? presentation) => presentation?.Kind switch
+    {
+        ContentPresentationKind.SWOT_ANALYSIS => SwotAnalysisContentPresentation.TryRead(presentation, out var result) ? result : null,
+
+        _ => null,
+    };
+}