Add utils + refacto

Assets/Unheimlich_POC/Scripts/Managers/DialogueManager.cs

@@ -1,5 +1,6 @@
 using UnityEngine;
 using System;
+using Unheimlich.Core;
 using Unheimlich.Data.Dialogues;
 using Unheimlich.Gameplay.Player;
 using Unheimlich.UI;
@@ -8,9 +9,8 @@ using System.Collections.Generic;
 
 namespace Unheimlich.Managers
 {
-    public class DialogueManager : MonoBehaviour
-{
-    public static DialogueManager Instance { get; private set; }
+    public class DialogueManager : Singleton<DialogueManager>
+    {
     
     [Header("State")]
     public bool IsInDialogue = false;
@@ -51,14 +51,8 @@ namespace Unheimlich.Managers
     private float _autoCloseTimer = 0f;
     private bool _isWaitingForAutoClose = false;
 
-    private void Awake()
+    protected override void OnAwake()
     {
-        if (Instance != null && Instance != this)
-        {
-            Destroy(this);
-            return;
-        }
-        Instance = this;
     }
 
     private void Start()