Support other switch controller types (#487)

* Make controllers modular, support changing controller type

* return readable events

* signal hid events

* fix style

Ryujinx.HLE/Input/HidControllerLayouts.cs

@@ -0,0 +1,13 @@
+namespace Ryujinx.HLE.Input
+{
+    public enum HidControllerLayouts
+    {
+        Pro_Controller  = 0,
+        Handheld_Joined = 1,
+        Joined          = 2,
+        Left            = 3,
+        Right           = 4,
+        Main_No_Analog  = 5,
+        Main            = 6
+    }
+}