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/ControllerConfig.cs

@@ -0,0 +1,30 @@
+namespace Ryujinx.Common.Configuration.Hid
+{
+    public class ControllerConfig : InputConfig
+    {
+        /// <summary>
+        /// Controller Left Analog Stick Deadzone
+        /// </summary>
+        public float DeadzoneLeft { get; set; }
+
+        /// <summary>
+        /// Controller Right Analog Stick Deadzone
+        /// </summary>
+        public float DeadzoneRight { get; set; }
+
+        /// <summary>
+        /// Controller Trigger Threshold
+        /// </summary>
+        public float TriggerThreshold { get; set; }
+
+        /// <summary>
+        /// Left JoyCon Controller Bindings
+        /// </summary>
+        public NpadControllerLeft LeftJoycon { get; set; }
+
+        /// <summary>
+        /// Right JoyCon Controller Bindings
+        /// </summary>
+        public NpadControllerRight RightJoycon { get; set; }
+    }
+}