Added registries

Assets/Scripts/Registeries/AdvertRegistry.cs

@@ -0,0 +1,20 @@
+using UnityEngine;
+
+namespace InterfaceOff
+{
+    [CreateAssetMenu(fileName = "Advert Registry", menuName = "Custom/Create Advert Registry")]
+    public class AdvertRegistry : ScriptableObject
+    {
+        [field: SerializeField] public Sprite[] m_Adverts;
+        private static AdvertRegistry Instance;
+
+        [RuntimeInitializeOnLoadMethod(RuntimeInitializeLoadType.BeforeSceneLoad)]
+        private static void LoadRegistry() => Instance = Resources.Load<AdvertRegistry>("AdvertRegistry");
+
+        public static Sprite GetRandomAdvert()
+        {
+            int index = Random.Range(0, Instance.m_Adverts.Length);
+            return Instance.m_Adverts[index];
+        }
+    }
+}