Added a prompt injection detection (#857)

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

app/MindWork AI Studio/Tools/Security/PromptInjectionAlertMessage.cs

@@ -0,0 +1,17 @@
+namespace AIStudio.Tools.Security;
+
+/// <summary>
+/// Asks the UI to tell the user what was filtered out of the content they just used.
+/// </summary>
+/// <remarks>
+/// Carries every result of one user action rather than a single one. Attaching twenty
+/// documents at once must produce one dialog listing all of them, not twenty dialogs.
+/// </remarks>
+/// <param name="Results">What was filtered, per piece of content.</param>
+public sealed record PromptInjectionAlertMessage(IReadOnlyList<PromptInjectionScanResult> Results)
+{
+    /// <summary>
+    /// Gets the total number of filtered passages across all content.
+    /// </summary>
+    public int TotalRedactedCount => this.Results.Sum(result => result.RedactedCount);
+}