Improvements to input and input configuration in the GUI. (#849)

* Improvements to input and input configuration in the GUI

* Requested changes

* nits

* more nits

Ryujinx.Common/Configuration/Hid/KeyboardConfig.cs

@@ -0,0 +1,20 @@
+namespace Ryujinx.Common.Configuration.Hid
+{
+    public class KeyboardConfig : InputConfig
+    {
+        /// <summary>
+        /// Left JoyCon Keyboard Bindings
+        /// </summary>
+        public NpadKeyboardLeft LeftJoycon { get; set; }
+
+        /// <summary>
+        /// Right JoyCon Keyboard Bindings
+        /// </summary>
+        public NpadKeyboardRight RightJoycon { get; set; }
+
+        /// <summary>
+        /// Hotkey Keyboard Bindings
+        /// </summary>
+        public KeyboardHotkeys Hotkeys { get; set; }
+    }
+}