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/DataBackupProgress.cs

@@ -0,0 +1,9 @@
+namespace AIStudio.Tools.DataBackup;
+
+/// <summary>
+/// How far a backup got.
+/// </summary>
+/// <param name="Phase">What the backup is busy with.</param>
+/// <param name="Processed">How many steps of the phase are done: vector stores while the indexes are copied, files while they are written.</param>
+/// <param name="Total">How many steps the phase has, or zero while that is not known yet.</param>
+public readonly record struct DataBackupProgress(DataBackupPhase Phase, int Processed, int Total);