player seek and chapter change

lib/db/player_prefs/book_prefs.dart

@@ -0,0 +1,29 @@
+// a table to track preferences of player for each book
+import 'package:isar/isar.dart';
+
+part 'book_prefs.g.dart';
+
+/// stores the preferences of the player for a book
+@Collection()
+@Name('BookPrefs')
+class BookPrefs {
+  @Id()
+  int libItemId;
+
+  double? speed;
+  // double? volume;
+  // Duration? sleepTimer;
+  // bool? showTotalProgress;
+  // bool? showChapterProgress;
+  // bool? useChapterInfo;
+
+  BookPrefs({
+    required this.libItemId,
+    this.speed,
+    // this.volume,
+    // this.sleepTimer,
+    // this.showTotalProgress,
+    // this.showChapterProgress,
+    // this.useChapterInfo,
+  });
+}