maint: added livewatch asset

Assets/Plugins/LiveWatchLite/Scripts/Utilities/OverridenValue.cs

@@ -0,0 +1,44 @@
+using System;
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace Ingvar.LiveWatch
+{
+    [Serializable]
+    public struct OverridenValue<T> : IEquatable<OverridenValue<T>> where T : IEquatable<T>
+    {
+        [SerializeField] private bool isSet;
+        [SerializeField] private T value;
+
+        public bool IsSet => isSet;
+        public T Value => value;
+
+        public OverridenValue(T initialValue)
+        {
+            isSet = true;
+            value = initialValue;
+        }
+        
+        public void SetValue(T setValue)
+        {
+            isSet = true;
+            value = setValue;
+        }
+
+        public bool Equals(OverridenValue<T> other)
+        {
+            return isSet && other.isSet && value.Equals(other.value)
+                || !isSet && !other.isSet;
+        }
+
+        public override bool Equals(object obj)
+        {
+            return obj is OverridenValue<T> other && Equals(other);
+        }
+
+        public override int GetHashCode()
+        {
+            return HashCode.Combine(isSet, value);
+        }
+    }
+}