Add enum example to Android/iOS rn-tester TurboModule

Summary:
Add enum example to Android/iOS rn-tester TurboModule

Changelog:
[General][Added] - Add enum example to Android/iOS rn-tester TurboModule

Reviewed By: javache

Differential Revision: D40619020

fbshipit-source-id: a113c5c78bcff3275e80d11bce8d0e6421b0b97d

ReactCommon/react/nativemodule/samples/platform/android/SampleTurboModule.java

@@ -48,6 +48,14 @@ public class SampleTurboModule extends NativeSampleTurboModuleSpec {
     return arg;
   }
 
+  @DoNotStrip
+  @SuppressWarnings("unused")
+  @Override
+  public double getEnum(double arg) {
+    log("getEnum", arg, arg);
+    return arg;
+  }
+
   @Override
   protected Map<String, Object> getTypedExportedConstants() {
     Map<String, Object> result = new HashMap<>();