Refactor HID, fix issues (#48)

* Refactor HID, fix issues

* Fix on touch screen code with wrong offset

* Don't use magic values

* Replace more magic values with actual variables, fix touch screen coordinates on different window sizes

Ryujinx.Core/Hid/HidControllerConnState.cs

@@ -0,0 +1,11 @@
+using System;
+
+namespace Ryujinx.Core.Input
+{
+    [Flags]
+    public enum HidControllerConnState
+    {
+        Controller_State_Connected = (1 << 0),
+        Controller_State_Wired     = (1 << 1)
+    }
+}