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/DataBackupPhase.cs

@@ -0,0 +1,22 @@
+namespace AIStudio.Tools.DataBackup;
+
+/// <summary>
+/// What a backup is busy with.
+/// </summary>
+public enum DataBackupPhase
+{
+    /// <summary>
+    /// It collects the settings and pauses the indexing.
+    /// </summary>
+    PREPARING,
+
+    /// <summary>
+    /// It copies the indexes of the data sources, one vector store after the other.
+    /// </summary>
+    COPYING_INDEXES,
+
+    /// <summary>
+    /// It writes the files into the backup.
+    /// </summary>
+    WRITING,
+}