GestureDetector: Translate start & end gesture positions when rotated (#13101)

* GestureDetector:adjustGesCoordinate: Remove one layer of indirectiçon in
direction translation

That function call wrapper felt pretty unnecessary to me ;).

* GestureDetector: Translate complex gesture positions, too

i.e., if there's a start and end position, translate those, too.

Fix #13090

spec/unit/gesturedetector_spec.lua

@@ -19,6 +19,8 @@ describe("gesturedetector module", function()
                                         DEVICE_ROTATED_COUNTER_CLOCKWISE = 3,
                                      }
             GestureDetector.screen.getTouchRotation = function() return rotation_mode end
+            GestureDetector.screen.getHeight = function() return 800 end
+            GestureDetector.screen.getWidth = function() return 600 end
 
             return GestureDetector:adjustGesCoordinate(ges).direction
         end