Add YogaNodeProperties implementation based on ByteBuffer

Summary:
@public
Adds an implementation of `YogaNodeProperties` that accesses style and layout properties using a `ByteBuffer` rather than JNI calls.
We hope for a speed improvement.

This needs further cleanup after experimenting, e.g. to codegen the offsets.

Reviewed By: pasqualeanatriello

Differential Revision: D8911723

fbshipit-source-id: 3c24b57eb545155878896ebb5d64d4553eb6bedc

java/com/facebook/yoga/YogaValue.java

@@ -33,7 +33,9 @@ public class YogaValue {
     if (other instanceof YogaValue) {
       final YogaValue otherValue = (YogaValue) other;
       if (unit == otherValue.unit) {
-        return unit == YogaUnit.UNDEFINED || Float.compare(value, otherValue.value) == 0;
+        return unit == YogaUnit.UNDEFINED
+            || unit == YogaUnit.AUTO
+            || Float.compare(value, otherValue.value) == 0;
       }
     }
     return false;