fix: wheelevent extends mouseevent (#167)

* fix: wheelevent extends mouseevent

Webapi__Dom__MouseEvent getters in Webapi__Dom__WheelEvent

* Test wheelevent changes

* Fix syntax error

Author: clentfort

src/Webapi/Webapi__Dom/Webapi__Dom__WheelEvent.re

@@ -2,6 +2,7 @@ type t = Dom.wheelEvent;
 
 include Webapi__Dom__Event.Impl({ type nonrec t = t; });
 include Webapi__Dom__UiEvent.Impl({ type nonrec t = t; });
+include Webapi__Dom__MouseEvent.Impl({ type nonrec t = t; });
 
 [@bs.new] external make : string => t = "WheelEvent";
 [@bs.new] external makeWithOptions : (string, Js.t({..})) => t = "WheelEvent";

tests/Webapi/Webapi__Dom/Webapi__Dom__WheelEvent__test.re

@@ -23,6 +23,9 @@ stopPropagation(event);
 let _ = detail(event);
 let _ = view(event);
 
+/* MouseEvent */
+let _ = clientX(event);
+
 /* WheelEvent */
 let _ = deltaX(event);
 let _ = deltaY(event);