UI 자동화를 위해 바인딩 기능 구현

- 유니티 에셋 인증 오류로 meta 재생성

Packages/com.unity.inputsystem/InputSystem/Utilities/DisplayStringFormatAttribute.cs

@@ -0,0 +1,22 @@
+using System;
+
+namespace UnityEngine.InputSystem.Utilities
+{
+    /// <summary>
+    /// Provide a format string to use when creating display strings for instances of the class.
+    /// </summary>
+    [AttributeUsage(AttributeTargets.Class, Inherited = true)]
+    public class DisplayStringFormatAttribute : Attribute
+    {
+        /// <summary>
+        /// Format template string in the form of "{namedPart} verbatimText". All named parts enclosed in
+        /// curly braces are replaced from context whereas other text is included as is.
+        /// </summary>
+        public string formatString { get; set; }
+
+        public DisplayStringFormatAttribute(string formatString)
+        {
+            this.formatString = formatString;
+        }
+    }
+}