Add Full system backup feature (#13945)

MediaBrowser.Controller/SystemBackupService/BackupOptionsDto.cs

@@ -0,0 +1,24 @@
+using System;
+
+namespace MediaBrowser.Controller.SystemBackupService;
+
+/// <summary>
+/// Defines the optional contents of the backup archive.
+/// </summary>
+public class BackupOptionsDto
+{
+    /// <summary>
+    /// Gets or sets a value indicating whether the archive contains the Metadata contents.
+    /// </summary>
+    public bool Metadata { get; set; }
+
+    /// <summary>
+    /// Gets or sets a value indicating whether the archive contains the Trickplay contents.
+    /// </summary>
+    public bool Trickplay { get; set; }
+
+    /// <summary>
+    /// Gets or sets a value indicating whether the archive contains the Subtitle contents.
+    /// </summary>
+    public bool Subtitles { get; set; }
+}