UI 자동화를 위해 바인딩 기능 구현

- 유니티 에셋 인증 오류로 meta 재생성

Packages/com.unity.inputsystem/InputSystem/Plugins/UI/ExtendedAxisEventData.cs

@@ -0,0 +1,28 @@
+#if PACKAGE_DOCS_GENERATION || UNITY_INPUT_SYSTEM_ENABLE_UI
+using UnityEngine.EventSystems;
+
+namespace UnityEngine.InputSystem.UI
+{
+    // AxisEventData has no ToString. Also added device info. Keeping
+    // it internal for now.
+    internal class ExtendedAxisEventData : AxisEventData, INavigationEventData
+    {
+        /// <summary>
+        /// The <see cref="InputDevice"/> that generated the axis input.
+        /// </summary>
+        /// <seealso cref="Keyboard"/>
+        /// <seealso cref="Gamepad"/>
+        public InputDevice device { get; set; }
+
+        public ExtendedAxisEventData(EventSystem eventSystem)
+            : base(eventSystem)
+        {
+        }
+
+        public override string ToString()
+        {
+            return $"MoveDir: {moveDir}\nMoveVector: {moveVector}";
+        }
+    }
+}
+#endif