Litho Props

Summary:
This diff adds support for layout and component props from Litho.

Notes:
- Each component could register a descriptor for itself.

Reviewed By: LukeDefeo

Differential Revision: D40680095

fbshipit-source-id: 57c78a199db58e05dd6dac4ed32ff6a869a73b0a

android/src/main/java/com/facebook/flipper/plugins/uidebugger/model/Inspectable.kt

@@ -89,6 +89,10 @@ sealed class InspectableValue : Inspectable() {
       val value: com.facebook.flipper.plugins.uidebugger.model.Enumeration,
   ) : InspectableValue()
 
+  @SerialName("unknown")
+  @kotlinx.serialization.Serializable
+  data class Unknown(val value: String?) : InspectableValue() {}
+
   companion object {
     /**
      * Will attempt to convert Any ref to a suitable primitive inspectable value. Only use if you

android/src/main/java/com/facebook/flipper/plugins/uidebugger/model/Types.kt

@@ -64,4 +64,4 @@ data class Size(
 ) {}
 
 @kotlinx.serialization.Serializable
-data class Enumeration(val values: Set<String>, val value: String)
+data class Enumeration(val values: Set<String>, val value: String?)