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/DataBackup/DataRestoreProgress.cs

@@ -0,0 +1,8 @@
+namespace AIStudio.Tools.DataBackup;
+
+/// <summary>
+/// How far the preparation of a restore got.
+/// </summary>
+/// <param name="Processed">How many files of the backup are unpacked.</param>
+/// <param name="Total">How many files there are to unpack, or zero while that is not known yet.</param>
+public readonly record struct DataRestoreProgress(int Processed, int Total);