[feat] microphone dropdown

Editor/UI/NeocortexMicrophoneDropdownEditor.cs

@@ -0,0 +1,25 @@
+using UnityEditor;
+using UnityEngine;
+
+namespace Neocortex
+{
+    [CustomEditor(typeof(NeocortexMicrophoneDropdown))]
+    public class NeocortexMicrophoneDropdownEditor : UnityEditor.Editor
+    {
+        private const string COMPONENT_NAME_IN_HIERARCY = "Microphone Dropdown";
+
+        [MenuItem("GameObject/Neocortex/Microphone Dropdown", false, -int.MaxValue)]
+        private static void AddElement()
+        {
+            EditorUtilities.CreateInCanvas<NeocortexMicrophoneDropdown>(COMPONENT_NAME_IN_HIERARCY, (canvas, target) =>
+            {
+                var targetTransform = target.transform as RectTransform;
+                var canvasTransform = canvas.transform as RectTransform;
+
+                if (targetTransform == null || canvasTransform == null) return;
+
+                targetTransform.anchoredPosition = new Vector2(0, 0);
+            });
+        }
+    }
+}