Added PowerPoint templates to the Slide Assistant (#1055)

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

app/MindWork AI Studio/Tools/PowerPoint/LayoutPurposeInfo.cs

@@ -0,0 +1,10 @@
+namespace AIStudio.Tools.PowerPoint;
+
+/// <summary>
+/// Everything known about one kind of slide.
+/// </summary>
+/// <param name="Area">The area the forms list the kind of slide in.</param>
+/// <param name="Label">The short name of the choice, e.g., "Layout for chapters", for the user.</param>
+/// <param name="Question">The question the choice answers, which says which slides it applies to, for the user.</param>
+/// <param name="PromptDescription">What the slides of this kind are, in English, for the model.</param>
+internal readonly record struct LayoutPurposeInfo(LayoutPurposeArea Area, string Label, string Question, string PromptDescription);