Added a way to read what the AI received from your sources (#1100)

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

app/MindWork AI Studio/Components/ContentViewerKind.cs

@@ -0,0 +1,17 @@
+namespace AIStudio.Components;
+
+/// <summary>
+/// What kind of content a ContentViewer shows.
+/// </summary>
+public enum ContentViewerKind
+{
+    /// <summary>
+    /// Text, shown as rendered Markdown and as plain text.
+    /// </summary>
+    TEXT,
+
+    /// <summary>
+    /// An image, shown from its address.
+    /// </summary>
+    IMAGE,
+}