Adds double ability triggers

Data/Scripts/050_AddOns/ExperimentalOptions.rb

@@ -36,7 +36,16 @@ class ExperimentalOptionsScene < PokemonOption_Scene
                      proc { |value|
                        $game_switches[SWITCH_NO_LEVELS_MODE] = value == 0
                      }, "All Pokémon use their base stats, regardless of levels."
-      )
+      ),
+          EnumOption.new(_INTL("Double abilities"), [_INTL("On"), _INTL("Off")],
+                         proc {
+                           $game_switches[SWITCH_DOUBLE_ABILITIES] ? 0 : 1
+                         },
+                         proc { |value|
+                           $game_switches[SWITCH_DOUBLE_ABILITIES] = value == 0
+                         }, "Fused Pokémon have two abilities at the same time"
+    )
+
     ]
     return options
   end