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/HidControllerId.cs

@@ -0,0 +1,16 @@
+namespace Ryujinx.Core.Input
+{
+    public enum HidControllerId
+    {
+        CONTROLLER_PLAYER_1 = 0,
+        CONTROLLER_PLAYER_2 = 1,
+        CONTROLLER_PLAYER_3 = 2,
+        CONTROLLER_PLAYER_4 = 3,
+        CONTROLLER_PLAYER_5 = 4,
+        CONTROLLER_PLAYER_6 = 5,
+        CONTROLLER_PLAYER_7 = 6,
+        CONTROLLER_PLAYER_8 = 7,
+        CONTROLLER_HANDHELD = 8,
+        CONTROLLER_UNKNOWN  = 9
+    }
+}