Adding @CountEnum to simple enums in xplat/js

Summary: Using The Count to transform enums to ints in production builds: https://our.intern.facebook.com/intern/wiki/Android-java-transforms/the-count/

Reviewed By: achen1

Differential Revision: D9614432

fbshipit-source-id: 1b1a197ad8f4962712d6006ab07b3beb3eaf2432

ReactAndroid/src/main/java/com/facebook/react/uimanager/PointerEvents.java

@@ -7,10 +7,13 @@
 
 package com.facebook.react.uimanager;
 
+import com.facebook.thecount.api.CountEnum;
+
 /**
  * Possible values for pointer events that a view and its descendants should receive. See
  * https://developer.mozilla.org/en-US/docs/Web/CSS/pointer-events for more info.
  */
+@CountEnum
 public enum PointerEvents {
 
   /**