Add support for tagged messages on the Layout Inspector

Summary:
Related diff [CK]: D23243009

This diff adds support for a protocol for layout messages where the type is recursively encoded as:

```
{
 kind: "type",
 data: ???
}
```

The meat of the diff is on FlipperEditor.java, SetDataOperations.java and InspectorFlipperPlugin.java. The others are there just for a change on an interface.

We check if the message adheres to the new encoding, otherwise we fall back to the old behavior. If it's the new encoding, the message is traversed recursively flattening the types to EditorValue using the type hints provided.

Reviewed By: muraziz

Differential Revision: D23243009

fbshipit-source-id: 0f313455885930f3beaaadb66f3bf394f109ea23

android/src/test/java/com/facebook/flipper/plugins/inspector/DescriptorMappingTest.java

@@ -15,6 +15,7 @@ import com.facebook.flipper.core.FlipperDynamic;
 import com.facebook.flipper.core.FlipperObject;
 import com.facebook.flipper.testing.FlipperConnectionMock;
 import java.util.List;
+import javax.annotation.Nullable;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.robolectric.RobolectricTestRunner;
@@ -56,7 +57,12 @@ public class DescriptorMappingTest {
     }
 
     @Override
-    public void setValue(T node, String[] path, FlipperDynamic value) throws Exception {}
+    public void setValue(
+        T node,
+        String[] path,
+        @Nullable SetDataOperations.FlipperValueHint kind,
+        FlipperDynamic value)
+        throws Exception {}
 
     @Override
     public List<Named<String>> getAttributes(T node) {

android/src/test/java/com/facebook/flipper/plugins/inspector/InspectorFlipperPluginTest.java

@@ -394,7 +394,12 @@ public class InspectorFlipperPluginTest {
     }
 
     @Override
-    public void setValue(TestNode node, String[] path, FlipperDynamic value) throws Exception {
+    public void setValue(
+        TestNode node,
+        String[] path,
+        @Nullable SetDataOperations.FlipperValueHint kind,
+        FlipperDynamic value)
+        throws Exception {
       if (path[0].equals("data")) {
         node.data = value.asObject();
       }