Add Playground link in Yoga layouts

Summary:
Adds a link to the Yoga playground atop all properties of Yoga-based views.

We could make the playground match the properties below if I figure out the hashing mechanism the website uses. This is a start.

Reviewed By: muraziz

Differential Revision: D23758538

fbshipit-source-id: 6a3f206914aa9962e55852df548f8026783506e9

android/plugins/litho/src/main/java/com/facebook/flipper/plugins/litho/DebugComponentDescriptor.java

@@ -192,6 +192,8 @@ public class DebugComponentDescriptor extends NodeDescriptor<DebugComponent> {
     }
 
     final FlipperObject.Builder data = new FlipperObject.Builder();
+    data.put("<PLAYGROUND>", InspectorValue.immutable("https://yogalayout.com/playground/"));
+
     data.put("background", DataUtils.fromDrawable(layout.getBackground()));
     data.put("foreground", DataUtils.fromDrawable(layout.getForeground()));