Implemented settings, new scan, enhanced UI/UX

lib/feature/settings/bloc/settings_state.dart

@@ -0,0 +1,11 @@
+import 'package:hl_lieferservice/feature/settings/model/settings.dart';
+
+abstract class SettingsState {}
+
+class AppSettingsInitial extends SettingsState {}
+class AppSettingsFailed extends SettingsState {}
+class AppSettingsLoaded extends SettingsState {
+  AppSettingsLoaded({required this.settings});
+
+  Settings settings;
+}