Highlighted code blocks inside the app (#1153)

app/MindWork AI Studio/Tools/CodeHighlighting/CodeDelimiters.cs

@@ -0,0 +1,8 @@
+namespace AIStudio.Tools.CodeHighlighting;
+
+/// <summary>
+/// What opens and closes a block comment, such as /* and */.
+/// </summary>
+/// <param name="Open">What opens the comment.</param>
+/// <param name="Close">What closes it.</param>
+public sealed record CodeDelimiters(string Open, string Close);