added simple UI

Assets/Darkmatter/Code/Features/MainMenu.meta

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Assets/Darkmatter/Code/Features/MainMenu/Features.Mainmenu.asmdef

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+    "name": "Features.Mainmenu",
+    "rootNamespace": "Darkmatter.Features.Mainmenu",
+    "references": [
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+}

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Assets/Darkmatter/Code/Features/MainMenu/Installers.meta

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Assets/Darkmatter/Code/Features/MainMenu/Installers/MainmenuServiceModule.cs

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+using Darkmatter.Libs.Installers;
+using UnityEngine;
+using VContainer;
+using VContainer.Unity;
+
+namespace Darkmatter.Features.Mainmenu
+{
+    public class MainmenuServiceModule: MonoBehaviour, IServiceModule
+    {
+        [SerializeField] private MainmenuView mainmenuView;
+        public void Register(IContainerBuilder builder)
+        {
+            if(mainmenuView!= null)
+            {
+                builder.RegisterEntryPoint<MainmenuPresenter>().WithParameter(mainmenuView);
+            }
+        }
+    }
+}

Assets/Darkmatter/Code/Features/MainMenu/Installers/MainmenuServiceModule.cs.meta

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Assets/Darkmatter/Code/Features/MainMenu/Mascot.meta

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Assets/Darkmatter/Code/Features/MainMenu/Mascot/MainmenuPresenter.cs

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+using System;
+using UnityEngine;
+using VContainer.Unity;
+
+namespace Darkmatter.Features.Mainmenu
+{
+    public class MainmenuPresenter : IStartable, IDisposable
+    {
+        private readonly MainmenuView _view;
+
+        public MainmenuPresenter(MainmenuView view)
+        {
+            _view = view;
+        }
+
+        public void Start()
+        {
+            _view.OnPlayBtnClickedEvent += OnPlayBtnClicked;
+        }
+
+        private void OnPlayBtnClicked()
+        {
+            Debug.Log("Play Btn Clicked");
+        }
+
+        public void Dispose()
+        {
+            _view.OnPlayBtnClickedEvent -= OnPlayBtnClicked;
+        }
+    }
+}

Assets/Darkmatter/Code/Features/MainMenu/Mascot/MainmenuPresenter.cs.meta

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Assets/Darkmatter/Code/Features/MainMenu/Mascot/MainmenuView.cs

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+using System;
+using UnityEngine;
+using UnityEngine.UI;
+
+namespace Darkmatter.Features.Mainmenu
+{
+    public class MainmenuView : MonoBehaviour
+    {
+        [SerializeField] private Button playBtn;
+        public event Action OnPlayBtnClickedEvent;
+        private void Start()
+        {
+            playBtn.onClick.AddListener(OnPlayBtnClicked);
+        }
+
+        private void OnPlayBtnClicked()
+        {
+            OnPlayBtnClickedEvent?.Invoke();
+        }
+    }
+}

Assets/Darkmatter/Code/Features/MainMenu/Mascot/MainmenuView.cs.meta

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