feat: add bootstrap architecture and common utilities for Unity project

- Add GameLifetimeScope for dependency injection with Zenject
- Implement boot flow service with entry point and interfaces
- Create boot state machine (Splash, Menu, Load states)
- Add UI views for boot screens
- Add common services base class and interface
- Implement generic state machine controller
- Add base UI view components and ViewModel interface
- Update SampleScene.unity
- Add BootSettings asset

Добавлена архитектура bootstrap и общие утилиты для Unity проекта:
- Добавлен GameLifetimeScope для внедрения зависимостей (Zenject)
- Реализован сервис потока загрузки с точкой входа и интерфейсами
- Создана машина состояний загрузки (Splash, Menu, Load состояния)
- Добавлены UI представления для экранов загрузки
- Добавлены базовые классы сервисов и интерфейс IService
- Реализован контроллер машины состояний
- Добавлены базовые компоненты UI вида и интерфейс ViewModel
- Обновлена сцена SampleScene.unity
- Добавлен ассет BootSettings

Assets/Scripts/Boot/States/BootStateCode.cs

@@ -0,0 +1,9 @@
+namespace QuizPleaseTest.Boot.States
+{
+    public enum BootStateCode
+    {
+        Splash,
+        Load,
+        Menu
+    }
+}

Assets/Scripts/Boot/States/BootStateCode.cs.meta

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Assets/Scripts/Boot/States/BootStatesController.cs

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+using System.Collections.Generic;
+using QuizPleaseTest.Common.StateMachine;
+
+namespace QuizPleaseTest.Boot.States
+{
+    public class BootStatesController : StatesController<BootStateCode>
+    {
+        public BootStatesController(
+            SplashState splashState,
+            LoadState loadState,
+            MenuState menuState)
+            : base(CreateStates(splashState, loadState, menuState))
+        {
+        }
+
+        private static IReadOnlyDictionary<BootStateCode, IState> CreateStates(
+            SplashState splashState,
+            LoadState loadState,
+            MenuState menuState)
+        {
+            return new Dictionary<BootStateCode, IState>
+            {
+                { BootStateCode.Splash, splashState },
+                { BootStateCode.Load, loadState },
+                { BootStateCode.Menu, menuState }
+            };
+        }
+    }
+}

Assets/Scripts/Boot/States/BootStatesController.cs.meta

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Assets/Scripts/Boot/States/LoadState.cs

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+using System.Threading;
+using Cysharp.Threading.Tasks;
+using QuizPleaseTest.Boot.UI;
+using QuizPleaseTest.Common.StateMachine;
+
+namespace QuizPleaseTest.Boot.States
+{
+    public class LoadState : IState
+    {
+        private readonly LoadingUIView _view;
+
+        public LoadState(LoadingUIView view)
+        {
+            _view = view;
+        }
+
+        public UniTask EnterAsync(CancellationToken ct)
+        {
+            _view.Initialize();
+            return UniTask.CompletedTask;
+        }
+
+        public UniTask ExitAsync(CancellationToken ct)
+        {
+            _view.Release();
+            return UniTask.CompletedTask;
+        }
+    }
+}

Assets/Scripts/Boot/States/LoadState.cs.meta

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Assets/Scripts/Boot/States/MenuState.cs

@@ -0,0 +1,29 @@
+using System.Threading;
+using Cysharp.Threading.Tasks;
+using QuizPleaseTest.Boot.UI;
+using QuizPleaseTest.Common.StateMachine;
+
+namespace QuizPleaseTest.Boot.States
+{
+    public class MenuState : IState
+    {
+        private readonly MenuUIView _view;
+
+        public MenuState(MenuUIView view)
+        {
+            _view = view;
+        }
+
+        public UniTask EnterAsync(CancellationToken ct)
+        {
+            _view.Initialize();
+            return UniTask.CompletedTask;
+        }
+
+        public UniTask ExitAsync(CancellationToken ct)
+        {
+            _view.Release();
+            return UniTask.CompletedTask;
+        }
+    }
+}

Assets/Scripts/Boot/States/MenuState.cs.meta

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Assets/Scripts/Boot/States/SplashState.cs

@@ -0,0 +1,29 @@
+using System.Threading;
+using Cysharp.Threading.Tasks;
+using QuizPleaseTest.Boot.UI;
+using QuizPleaseTest.Common.StateMachine;
+
+namespace QuizPleaseTest.Boot.States
+{
+    public class SplashState : IState
+    {
+        private readonly SplashUIView _view;
+
+        public SplashState(SplashUIView view)
+        {
+            _view = view;
+        }
+
+        public UniTask EnterAsync(CancellationToken ct)
+        {
+            _view.Initialize();
+            return UniTask.CompletedTask;
+        }
+
+        public UniTask ExitAsync(CancellationToken ct)
+        {
+            _view.Release();
+            return UniTask.CompletedTask;
+        }
+    }
+}

Assets/Scripts/Boot/States/SplashState.cs.meta

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