Add player controller, state management, and input handling

- Implemented PlayerController.cs to manage player movement and actions.
- Created PlayerState.cs to track player lives, coins, and key status.
- Added CameraFollow.cs for smooth camera movement following the player.
- Developed Character.cs as an abstract class for character behavior.
- Introduced Enums.cs for defining TreasureType and MapElementType.
- Added IDoor interface for door interactions.
- Created InputActions.cs for handling player input actions.
- Implemented MainMenu.cs for basic menu functionality including play and exit options.

Assets/Scripts/Environment/BreakableWall.cs

@@ -0,0 +1,82 @@
+using UnityEngine;
+
+public class BreakableWall : MapElement
+{
+    [SerializeField] private float _noiseRadius = 10f;
+    [SerializeField] private bool _emitNoiseOnBreak = true;
+
+    private float _respawnElementTimer;
+    private int _respawnTimeout = 4;
+    private bool _needRespawn = false;
+    private bool _characterInRange = false;
+
+    private BoxCollider2D _boxCollider;
+    private SpriteRenderer _spriteRenderer;
+
+    [SerializeField]
+    private GameObject _hitParticles;
+
+    private void Start()
+    {
+        _respawnElementTimer = _respawnTimeout;
+        _boxCollider = GetComponent<BoxCollider2D>();
+        _spriteRenderer = GetComponentInChildren<SpriteRenderer>();
+    }
+
+    public override void Hit()
+    {
+        IsEnabled = false;
+        _boxCollider.isTrigger = true;
+        _spriteRenderer.enabled = IsEnabled;
+
+        Instantiate(_hitParticles, transform.position, Quaternion.identity);
+
+        // Emit noise when wall breaks
+        if (_emitNoiseOnBreak && NoiseSystem.Instance != null)
+        {
+            NoiseSystem.Instance.Emit(transform.position, _noiseRadius);
+        }
+
+        _respawnElementTimer = _respawnTimeout;
+        _needRespawn = true;
+    }
+
+    private void Update()
+    {
+        if (_needRespawn)
+        {
+            _respawnElementTimer -= Time.deltaTime;
+            if (_respawnElementTimer <= 0)
+            {
+                _respawnElementTimer = _respawnTimeout;
+
+                if (_characterInRange)
+                {
+                    print("Character is dead");
+                }
+                IsEnabled = true;
+                _boxCollider.isTrigger = false;
+                _spriteRenderer.enabled = IsEnabled;
+                _needRespawn = false;
+            }
+        }
+    }
+
+    private void OnTriggerEnter2D(Collider2D collider)
+    {
+        var character = collider.GetComponent<Character>();
+        if (character)
+        {
+            _characterInRange = true;
+        }
+    }
+
+    private void OnTriggerExit2D(Collider2D collider)
+    {
+        var character = collider.GetComponent<Character>();
+        if (character)
+        {
+            _characterInRange = false;
+        }
+    }
+}