refactor: renamed files

lib/game/components/components.dart

@@ -3,6 +3,7 @@ export 'baseboard.dart';
 export 'board.dart';
 export 'board_side.dart';
 export 'bonus_word.dart';
+export 'dash_nest_bumper.dart';
 export 'flipper.dart';
 export 'initial_position.dart';
 export 'jetpack_ramp.dart';
@@ -13,7 +14,6 @@ export 'layer.dart';
 export 'pathway.dart';
 export 'plunger.dart';
 export 'ramp_opening.dart';
-export 'round_bumper.dart';
 export 'score_points.dart';
 export 'spaceship.dart';
 export 'wall.dart';

test/game/components/dash_nest_bumper.dart

@@ -8,7 +8,7 @@ import 'package:pinball/game/game.dart';
 void main() {
   TestWidgetsFlutterBinding.ensureInitialized();
 
-  group('RoundBumper', () {
+  group('DashNestBumper', () {
     final flameTester = FlameTester(Forge2DGame.new);
     const radius = 1.0;
     const points = 1;