Add microphone key binding container

osu.Framework.Microphone/Input/Bindings/IMicrophoneAction.cs

@@ -0,0 +1,18 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+namespace osu.Framework.Input.Bindings
+{
+    public interface IMicrophoneAction
+    {
+        /// <summary>
+        /// Detected pitch
+        /// </summary>
+        public double Pitch { get; set; }
+
+        /// <summary>
+        /// Detected volumn
+        /// </summary>
+        public float Volumn { get; set; }
+    }
+}

osu.Framework.Microphone/Input/Bindings/MicrophoneKeyBindingContainer.cs

@@ -0,0 +1,18 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using osu.Framework.Input.Events;
+using System.Collections.Generic;
+
+namespace osu.Framework.Input.Bindings
+{
+    public class MicrophoneKeyBindingContainer<T> : KeyBindingContainer<T> where T : struct, IMicrophoneAction
+    {
+        public override IEnumerable<KeyBinding> DefaultKeyBindings => new List<KeyBinding>();
+
+        protected override bool Handle(UIEvent e)
+        {
+            return base.Handle(e);
+        }
+    }
+}