Added backups of all data, restorable on another computer (#1008)

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

app/MindWork AI Studio/Tools/ChatArchive/ChatArchiveImportOutcome.cs

@@ -0,0 +1,22 @@
+namespace AIStudio.Tools.ChatArchive;
+
+/// <summary>
+/// The outcome of importing one single chat.
+/// </summary>
+public enum ChatArchiveImportOutcome
+{
+    /// <summary>
+    /// The chat was written to the chat storage.
+    /// </summary>
+    IMPORTED,
+
+    /// <summary>
+    /// The chat already existed and was left alone.
+    /// </summary>
+    SKIPPED,
+
+    /// <summary>
+    /// The chat could not be imported.
+    /// </summary>
+    FAILED,
+}