added main menu

Assets/Code/UI/MainMenuController.cs

@@ -0,0 +1,30 @@
+using UnityEngine;
+using UnityEngine.SceneManagement;
+using UnityEngine.UI;
+
+namespace Code.UI
+{
+    public class MainMenuController : MonoBehaviour
+    {
+        [SerializeField] private Button[] buttons;
+
+        private void Start()
+        {
+            for (var i = 0; i < buttons.Length; i++)
+            {
+                var i1 = i;
+                buttons[i].onClick.AddListener(() => LoadLab(i1));
+            }
+        }
+
+        private static void LoadLab(int number)
+        {
+            var sceneName = $"Lab{number + 1}";
+
+            if (Application.CanStreamedLevelBeLoaded(sceneName))
+                SceneManager.LoadScene(sceneName);
+            else
+                Debug.LogWarning($"There is no lab number {number + 1}");
+        }
+    }
+}