refactor: app metadata (#28113)

* refactor: app metadata

* refactor to per row store

* cleanup

* more test

* review changes

* more refactor

* refactor

---------

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

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

@@ -0,0 +1,18 @@
+import 'package:immich_mobile/domain/models/config/theme_config.dart';
+
+class AppConfig {
+  final ThemeConfig theme;
+
+  const AppConfig({this.theme = const ThemeConfig()});
+
+  AppConfig copyWith({ThemeConfig? theme}) => .new(theme: theme ?? this.theme);
+
+  @override
+  bool operator ==(Object other) => identical(this, other) || (other is AppConfig && other.theme == theme);
+
+  @override
+  int get hashCode => theme.hashCode;
+
+  @override
+  String toString() => 'AppConfig(theme: $theme)';
+}

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

@@ -0,0 +1,18 @@
+import 'package:immich_mobile/domain/models/log.model.dart';
+
+class SystemConfig {
+  final LogLevel logLevel;
+
+  const SystemConfig({this.logLevel = .info});
+
+  SystemConfig copyWith({LogLevel? logLevel}) => SystemConfig(logLevel: logLevel ?? this.logLevel);
+
+  @override
+  bool operator ==(Object other) => identical(this, other) || (other is SystemConfig && other.logLevel == logLevel);
+
+  @override
+  int get hashCode => logLevel.hashCode;
+
+  @override
+  String toString() => 'SystemConfig(logLevel: $logLevel)';
+}

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

@@ -0,0 +1,18 @@
+import 'package:flutter/material.dart';
+
+class ThemeConfig {
+  final ThemeMode mode;
+
+  const ThemeConfig({this.mode = .system});
+
+  ThemeConfig copyWith({ThemeMode? mode}) => .new(mode: mode ?? this.mode);
+
+  @override
+  bool operator ==(Object other) => identical(this, other) || (other is ThemeConfig && other.mode == mode);
+
+  @override
+  int get hashCode => mode.hashCode;
+
+  @override
+  String toString() => 'ThemeConfig(mode: $mode)';
+}