Move YGLogger into YGConfig and associate YGNodeRef with log events

Summary:
Moves the `YGLogger` into `YGConfig` and pass the `YGNodeRef` into the logger to be able to associate the log messages and assertions with the specific node.

Tackles facebook/yoga#530 and facebook/yoga#446
Closes https://github.com/facebook/yoga/pull/531

Reviewed By: astreet

Differential Revision: D4970149

Pulled By: emilsjolander

fbshipit-source-id: b7fcdaa273143ea2fa35861620b2e4d79f04f0af

java/com/facebook/yoga/YogaNode.java

@@ -28,12 +28,6 @@ public class YogaNode {
    * Get native instance count. Useful for testing only.
    */
   static native int jni_YGNodeGetInstanceCount();
-  static native void jni_YGLog(int level, String message);
-
-  private static native void jni_YGSetLogger(Object logger);
-  public static void setLogger(YogaLogger logger) {
-    jni_YGSetLogger(logger);
-  }
 
   private YogaNode mParent;
   private List<YogaNode> mChildren;