refactor: move all scripts to Scripts folder

Assets/Scripts/LevelLoader.cs

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+using System.IO;
+using System.Runtime.Serialization.Json;
+using UnityEngine;
+using UnityEngine.UI;
+
+public class LevelLoader : MonoBehaviour
+{
+    public Text levelNameText;
+    private Level level;
+
+    void Start()
+    {
+        LoadLevel();
+        if (level != null)
+        {
+            levelNameText.text = level.Name;
+        }
+        else
+        {
+            levelNameText.text = "Failed to Load Level";
+        }
+    }
+
+    void LoadLevel()
+    {
+        string path = Path.Combine(Application.dataPath, "Levels", "back-on-track.json");
+        if (File.Exists(path))
+        {
+            string json = File.ReadAllText(path);
+            using (MemoryStream stream = new MemoryStream(System.Text.Encoding.UTF8.GetBytes(json)))
+            {
+                DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(Level));
+                level = (Level)serializer.ReadObject(stream);
+            }
+        }
+        else
+        {
+            Debug.LogError("Level file not found: " + path);
+        }
+    }
+}

Assets/Scripts/LevelLoader.cs.meta

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+fileFormatVersion: 2
+guid: 4c3543e79f987af40bbd4a51c0a334c3

Assets/Scripts/MainMenu.cs

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+using UnityEngine;
+using UnityEngine.SceneManagement;
+
+public class MainMenu : MonoBehaviour
+{
+    public void LaunchGame()
+    {
+        SceneManager.LoadSceneAsync("SelectLevelScene");
+    }
+
+    public void OpenSettings()
+    {
+        // SceneManager.LoadSceneAsync(?);
+    }
+
+    public void QuitGame()
+    {
+        Application.Quit();
+    }
+}

Assets/Scripts/MainMenu.cs.meta

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+fileFormatVersion: 2
+guid: a1cd6b406f139414086355a222af717e

Assets/Scripts/SelectLevelMenu.cs

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+using UnityEngine;
+using UnityEngine.UI;
+using UnityEngine.SceneManagement;
+
+public class SelectLevelMenu : MonoBehaviour
+{
+    public Text levelNameText;
+
+    public void PlayLevel()
+    {
+        SceneManager.LoadScene("LevelScene");
+    }
+
+    public void BackBtn()
+    {
+        SceneManager.LoadScene("HomeScene");
+    }
+
+    public void LastLevel()
+    {
+        // TODO
+    }
+
+    public void NextLevel()
+    {
+        // TODO
+    }
+
+    public void LevelStatsBtn()
+    {
+        // SceneManager.LoadSceneAsync(?);
+    }
+}

Assets/Scripts/SelectLevelMenu.cs.meta

@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: 78914afaa50342f4fbc6b2f0d1a6c036