increase room diversity, improve ui

Assets/Engine/Runtime/UI/PersistedUI.cs

@@ -0,0 +1,21 @@
+using UnityEngine;
+
+namespace EscapeRoomEngine.Engine.Runtime.UI
+{
+    public abstract class PersistedUI<T> : MonoBehaviour
+    {
+        public string key;
+        public T defaultValue;
+
+        public T Value { get; protected set; }
+
+        protected virtual void Start()
+        {
+            Value = RetrieveValue();
+            DisplayValue();
+        }
+
+        protected abstract T RetrieveValue();
+        protected abstract void DisplayValue();
+    }
+}