test: added multiplier to game state

test/game/components/controlled_flipper_test.dart

@@ -19,6 +19,7 @@ void main() {
       final bloc = MockGameBloc();
       const state = GameState(
         score: 0,
+        multiplier: 1,
         balls: 0,
         bonusHistory: [],
       );

test/game/components/controlled_plunger_test.dart

@@ -20,6 +20,7 @@ void main() {
       final bloc = MockGameBloc();
       const state = GameState(
         score: 0,
+        multiplier: 1,
         balls: 0,
         bonusHistory: [],
       );

test/game/components/game_flow_controller_test.dart

@@ -14,6 +14,7 @@ void main() {
       test('is true when the game over state has changed', () {
         final state = GameState(
           score: 10,
+          multiplier: 1,
           balls: 0,
           bonusHistory: const [],
         );
@@ -63,6 +64,7 @@ void main() {
           gameFlowController.onNewState(
             GameState(
               score: 10,
+              multiplier: 1,
               balls: 0,
               bonusHistory: const [],
             ),

test/game/components/score_effect_controller_test.dart

@@ -29,6 +29,7 @@ void main() {
         const previous = GameState.initial();
         const current = GameState(
           score: 10,
+          multiplier: 1,
           balls: 3,
           bonusHistory: [],
         );
@@ -41,6 +42,7 @@ void main() {
         () {
           const current = GameState(
             score: 10,
+            multiplier: 1,
             balls: 3,
             bonusHistory: [],
           );
@@ -65,6 +67,7 @@ void main() {
         () {
           const state = GameState(
             score: 10,
+            multiplier: 1,
             balls: 3,
             bonusHistory: [],
           );
@@ -82,6 +85,7 @@ void main() {
         controller.onNewState(
           const GameState(
             score: 10,
+            multiplier: 1,
             balls: 3,
             bonusHistory: [],
           ),
@@ -90,6 +94,7 @@ void main() {
         controller.onNewState(
           const GameState(
             score: 14,
+            multiplier: 1,
             balls: 3,
             bonusHistory: [],
           ),

test/game/view/game_hud_test.dart

@@ -11,6 +11,7 @@ void main() {
     late GameBloc gameBloc;
     const initialState = GameState(
       score: 10,
+      multiplier: 1,
       balls: 2,
       bonusHistory: [],
     );