Added controls for DOOM II (Classic), and amended Doom 1993 & Perfect Dark. (#327)

* Update perfect-dark.json

Added stick functionality to the left bumper button, as this button opens up the weapon wheel in game.

* Update doom-1993.json

Added the “X” button to the top right, as this is required for toggling add ons in the main menu.

* Create 2078926688.json

Added controls for DOOM II (Classic)

* Create doom-II-classic.json

Added touch controls for DOOM II (Classic)

* Rename doom-II-classic.json to doom-ii-classic.json

touch-layouts/layouts/doom-1993.json

@@ -134,6 +134,10 @@
             {
               "type": "button",
               "action": "gamepadB"
+            },
+            {
+              "type": "button",
+              "action": "gamepadX"
             }
           ]
         },