refactor(statistic): export only used entities

features/statistic/lib/statistic.dart

@@ -4,7 +4,7 @@
 library statistic;
 
 export 'src/di/injector.module.dart';
-export 'src/domain/entities/entities.dart';
+export 'src/domain/entities/entities.dart' show CovidTest, Statistic;
 export 'src/presentation/cubits/cubits.dart';
 export 'src/presentation/widgets/widgets.dart';
 export 'src/router/router.dart';