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/DataBackupManifest.cs

@@ -0,0 +1,22 @@
+namespace AIStudio.Tools.DataBackup;
+
+/// <summary>
+/// What a backup holds, and what wrote it.
+/// </summary>
+/// <param name="FormatVersion">The version of the format, cf. DataBackupFormat.FORMAT_VERSION.</param>
+/// <param name="AppVersion">The version of AI Studio which wrote the backup.</param>
+/// <param name="SettingsVersion">The version of the settings in the backup.</param>
+/// <param name="CreatedAtUtc">When the backup was written.</param>
+/// <param name="SourceDataDirectory">The data folder the backup was made from, for whoever wonders where it came from.</param>
+/// <param name="SourceConfigDirectory">The configuration folder the backup was made from.</param>
+/// <param name="IncludesDataSourceIndexes">Whether the backup holds the indexes of the data sources. Without them, a restore keeps the indexes there are.</param>
+/// <param name="Entries">Every file of the backup, the manifest aside.</param>
+public sealed record DataBackupManifest(
+    int FormatVersion,
+    string AppVersion,
+    string SettingsVersion,
+    DateTimeOffset CreatedAtUtc,
+    string SourceDataDirectory,
+    string SourceConfigDirectory,
+    bool IncludesDataSourceIndexes,
+    IReadOnlyList<DataBackupManifestEntry> Entries);