refactor: move image config to metadata table (#28228)

* migrate image config

---------

Co-authored-by: shenlong-tanwen <139912620+shalong-tanwen@users.noreply.github.com>

mobile/lib/domain/models/config/image_config.dart

@@ -0,0 +1,20 @@
+class ImageConfig {
+  final bool preferRemote;
+  final bool loadOriginal;
+
+  const ImageConfig({this.preferRemote = false, this.loadOriginal = false});
+
+  ImageConfig copyWith({bool? preferRemote, bool? loadOriginal}) =>
+      ImageConfig(preferRemote: preferRemote ?? this.preferRemote, loadOriginal: loadOriginal ?? this.loadOriginal);
+
+  @override
+  bool operator ==(Object other) =>
+      identical(this, other) ||
+      (other is ImageConfig && other.preferRemote == preferRemote && other.loadOriginal == loadOriginal);
+
+  @override
+  int get hashCode => Object.hash(preferRemote, loadOriginal);
+
+  @override
+  String toString() => 'ImageConfig(preferRemoteImage: $preferRemote, loadOriginal: $loadOriginal)';
+}