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/ChatArchiveProgress.cs

@@ -0,0 +1,8 @@
+namespace AIStudio.Tools.ChatArchive;
+
+/// <summary>
+/// Reports the progress of an export or import operation.
+/// </summary>
+/// <param name="ProcessedChats">The number of chats processed so far.</param>
+/// <param name="TotalChats">The total number of chats to process.</param>
+public readonly record struct ChatArchiveProgress(int ProcessedChats, int TotalChats);