feat: rename History tab to Library and show local library items

- Rename bottom navigation 'History' to 'Library'
- Add Local Library section showing scanned tracks below downloaded tracks
- Add source badge to each item (Downloaded/Local) for clear identification
- Add new localization strings for Library tab and source badges
- Local library items can be played directly from the library tab

lib/models/settings.g.dart

@@ -48,6 +48,8 @@ AppSettings _$AppSettingsFromJson(Map<String, dynamic> json) => AppSettings(
   cloudUsername: json['cloudUsername'] as String? ?? '',
   cloudPassword: json['cloudPassword'] as String? ?? '',
   cloudRemotePath: json['cloudRemotePath'] as String? ?? '/Music/SpotiFLAC',
+  cloudAllowInsecureHttp:
+      json['cloudAllowInsecureHttp'] as bool? ?? false,
   localLibraryEnabled: json['localLibraryEnabled'] as bool? ?? false,
   localLibraryPath: json['localLibraryPath'] as String? ?? '',
   localLibraryShowDuplicates:
@@ -94,6 +96,7 @@ Map<String, dynamic> _$AppSettingsToJson(AppSettings instance) =>
       'cloudUsername': instance.cloudUsername,
       'cloudPassword': instance.cloudPassword,
       'cloudRemotePath': instance.cloudRemotePath,
+      'cloudAllowInsecureHttp': instance.cloudAllowInsecureHttp,
       'localLibraryEnabled': instance.localLibraryEnabled,
       'localLibraryPath': instance.localLibraryPath,
       'localLibraryShowDuplicates': instance.localLibraryShowDuplicates,